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	Past 7 Days


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	Outside air quality > History of air quality on the M5 East project > 2006 M5 East portal monitoring analysis > Tunnel air quality explained > Graphs > Live data > Historical data > Exceedances > Frequently asked questions > Glossary of terms > DECC Air quality data

Air Quality Monitoring - Past 7 Days

Disclaimer

The data used on this page comes directly from the air monitoring stations. This data may be adjusted at a later time through a standardised procedure to account for instrument errors, power interruptions and the like.

Note: these figures have not been validated. To view the most recent validated data, please click here.

Station 2 (X1) - Hourly average readings for previous 7 calendar days.

Note: These figures have not been validated. To view the most recent validated data, please click here.
A grey background indicates that data is temporarily unavailable.

Date	Hour	CO ppm	NO₂ µg/m³	PM₁₀ µg/m³	Wind Direction	Wind Velocity km/h	PM₁₀ µg/m³ (daily avg)
19/11/09	1am - 2am	0.24		15.0	N	2	26
19/11/09	2am - 3am	0.22	20.5	12.2	N	2	26
19/11/09	3am - 4am	0.21	24.6	11.5	N	1	26
19/11/09	4am - 5am	0.21	22.6	16.4	NW	5	26
19/11/09	5am - 6am	0.20	28.8	14.7	N	4	26
19/11/09	6am - 7am	0.21	30.8	19.0	N	4	26
19/11/09	7am - 8am	0.24	32.9	24.1	N	4	26
19/11/09	8am - 9am	0.26	32.9	25.5	NNE	4	26
19/11/09	9am - 10am	0.26	26.7	19.7	NNE	4	26
19/11/09	10am - 11am	0.28	39.0	44.9	S	8	26
19/11/09	11am - 12pm	0.29	32.9	29.9	E	6	26
19/11/09	12pm - 1pm	0.30	26.7	28.8	ENE	7	26
19/11/09	1pm - 2pm	0.29	20.5	16.1	ENE	9	26
19/11/09	2pm - 3pm	0.27	24.6	27.2	ENE	8	26
19/11/09	3pm - 4pm	0.25	26.7	26.2	NE	8	26
19/11/09	4pm - 5pm	0.24	24.6	32.2	NE	8	26
19/11/09	5pm - 6pm	0.23	22.6	30.0	NE	10	26
19/11/09	6pm - 7pm	0.24	30.8	31.4	NE	7	26
19/11/09	7pm - 8pm	0.25	39.0	26.9	NE	5	26
19/11/09	8pm - 9pm	0.29	37.0	37.3	NNE	3	26
19/11/09	9pm - 10pm	0.32	43.1	35.1	NE	3	26
19/11/09	10pm - 11pm	0.36	47.2	32.4	ENE	2	26
19/11/09	11pm - 12am	0.40	43.1	33.1	E	1	26
20/11/09	12am - 1am	0.41	34.9	33.2	ENE	3	26

Date	Hour	CO ppm	NO₂ µg/m³	PM₁₀ µg/m³	Wind Direction	Wind Velocity km/h	PM₁₀ µg/m³ (daily avg)
20/11/09	1am - 2am	0.43		21.6	W	1	28
20/11/09	2am - 3am	0.42	30.8	19.8	ESE	1	28
20/11/09	3am - 4am	0.39	22.6	17.1	WSW	2	28
20/11/09	4am - 5am	0.34	26.7	18.8	SSW	3	28
20/11/09	5am - 6am	0.32	28.8	18.6	S	3	28
20/11/09	6am - 7am	0.31	30.8	38.0	NE	2	28
20/11/09	7am - 8am	0.33	39.0	42.8	WNW	3	28
20/11/09	8am - 9am	0.36	45.2	23.2	NW	5	28
20/11/09	9am - 10am	0.38	49.3	27.4	WNW	2	28
20/11/09	10am - 11am	0.41	57.5	63.8	NW	1	28
20/11/09	11am - 12pm	0.44		56.0	NNW	2	28
20/11/09	12pm - 1pm	0.48	51.3	50.5	NE	3	28
20/11/09	1pm - 2pm	0.51	47.2	34.5	ENE	9	28
20/11/09	2pm - 3pm	0.49	41.1	40.7	ENE	8	28
20/11/09	3pm - 4pm	0.45	61.6	31.8	ENE	1	28
20/11/09	4pm - 5pm	0.41	39.0	19.6	NE	12	28
20/11/09	5pm - 6pm	0.38	49.3	9.7	NE	8	28
20/11/09	6pm - 7pm	0.35	45.2	54.1	NNE	5	28
20/11/09	7pm - 8pm	0.35	55.5	19.9	NNE	5	28
20/11/09	8pm - 9pm	0.35	76.0	26.0	N	2	28
20/11/09	9pm - 10pm	0.32	34.9	7.9	NNE	5	28
20/11/09	10pm - 11pm	0.29	24.6	3.2	NNE	5	28
20/11/09	11pm - 12am	0.23	14.4	6.4	NNE	7	28
21/11/09	12am - 1am	0.20	22.6	11.1	NW	5	28

Date	Hour	CO ppm	NO₂ µg/m³	PM₁₀ µg/m³	Wind Direction	Wind Velocity km/h	PM₁₀ µg/m³ (daily avg)
21/11/09	1am - 2am	0.19		21.3	WSW	7	25
21/11/09	2am - 3am	0.17	6.2	23.7	S	25	25
21/11/09	3am - 4am	0.13	4.1	25.4	S	24	25
21/11/09	4am - 5am	0.08	6.2	21.9	S	20	25
21/11/09	5am - 6am	0.07	6.2	20.0	S	14	25
21/11/09	6am - 7am	0.08	10.3	19.8	SSW	10	25
21/11/09	7am - 8am	0.11	10.3	21.6	SSW	8	25
21/11/09	8am - 9am	0.13	10.3	24.1	SSW	6	25
21/11/09	9am - 10am	0.14	14.4	20.5	WSW	5	25
21/11/09	10am - 11am	0.16	16.4	25.8	SSW	5	25
21/11/09	11am - 12pm	0.17	8.2	22.3	S	7	25
21/11/09	12pm - 1pm	0.18	8.2	23.4	S	8	25
21/11/09	1pm - 2pm	0.20	12.3	27.4	S	8	25
21/11/09	2pm - 3pm	0.20	8.2	9.5	SSE	7	25
21/11/09	3pm - 4pm	0.21	8.2	30.1	S	9	25
21/11/09	4pm - 5pm	0.21	18.5	28.0	SSE	6	25
21/11/09	5pm - 6pm	0.21	18.5	38.5	S	7	25
21/11/09	6pm - 7pm	0.22	28.8	29.7	SE	4	25
21/11/09	7pm - 8pm	0.24	20.5	27.4	SE	4	25
21/11/09	8pm - 9pm	0.25	34.9	35.3	S	2	25
21/11/09	9pm - 10pm	0.27	30.8	30.6	SW	4	25
21/11/09	10pm - 11pm	0.30	24.6	28.4	SW	4	25
21/11/09	11pm - 12am	0.33	30.8	27.9	SW	4	25
22/11/09	12am - 1am	0.35	14.4	25.3	S	6	25

Date	Hour	CO ppm	NO₂ µg/m³	PM₁₀ µg/m³	Wind Direction	Wind Velocity km/h	PM₁₀ µg/m³ (daily avg)
22/11/09	1am - 2am	0.35		31.3	S	10	53
22/11/09	2am - 3am	0.33	4.1	28.6	S	7	53
22/11/09	3am - 4am	0.30	4.1	22.1	SSW	5	53
22/11/09	4am - 5am	0.27	4.1	18.5	SW	4	53
22/11/09	5am - 6am	0.24	10.3	20.2	WNW	4	53
22/11/09	6am - 7am	0.24	18.5	23.7	NW	4	53
22/11/09	7am - 8am	0.21	18.5	32.1	NW	5	53
22/11/09	8am - 9am	0.19	16.4	27.7	N	3	53
22/11/09	9am - 10am	0.21	22.6	29.1	NNE	5	53
22/11/09	10am - 11am	0.23	22.6	16.0	N	8	53
22/11/09	11am - 12pm	0.24	14.4	36.5	N	14	53
22/11/09	12pm - 1pm	0.25	14.4	54.8	N	14	53
22/11/09	1pm - 2pm	0.26	12.3	33.4	N	15	53
22/11/09	2pm - 3pm	0.23	14.4	64.8	N	14	53
22/11/09	3pm - 4pm	0.19	10.3	72.5	NW	17	53
22/11/09	4pm - 5pm	0.16	12.3	117.5	NNW	15	53
22/11/09	5pm - 6pm	0.13	18.5	128.8	NNW	10	53
22/11/09	6pm - 7pm	0.09	12.3	110.5	W	18	53
22/11/09	7pm - 8pm	0.06	14.4	89.1	WSW	15	53
22/11/09	8pm - 9pm	0.05	20.5	66.8	WSW	9	53
22/11/09	9pm - 10pm	0.03	20.5	54.8	W	11	53
22/11/09	10pm - 11pm	0.03	32.9	52.7	SW	9	53
22/11/09	11pm - 12am	0.07	37.0	70.4	S	4	53
23/11/09	12am - 1am	0.08	12.3	77.0	S	18	53

Date	Hour	CO ppm	NO₂ µg/m³	PM₁₀ µg/m³	Wind Direction	Wind Velocity km/h	PM₁₀ µg/m³ (daily avg)
23/11/09	1am - 2am	0.08		24.7	S	25	18
23/11/09	2am - 3am	0.09	2.1	18.6	S	21	18
23/11/09	3am - 4am	0.09	2.1	20.5	S	18	18
23/11/09	4am - 5am	0.08	4.1	18.4	S	19	18
23/11/09	5am - 6am	0.06	6.2	19.8	S	19	18
23/11/09	6am - 7am	0.04	6.2	15.8	S	17	18
23/11/09	7am - 8am	0.00	6.2	22.1	S	17	18
23/11/09	8am - 9am	-0.03	6.2	22.0	S	16	18
23/11/09	9am - 10am	-0.03	8.2	28.0	S	13	18
23/11/09	10am - 11am	-0.04	10.3	28.2	S	11	18
23/11/09	11am - 12pm	-0.05	10.3	29.3	S	12	18
23/11/09	12pm - 1pm	-0.04	10.3	21.2	S	12	18
23/11/09	1pm - 2pm	-0.04	10.3	6.8	S	12	18
23/11/09	2pm - 3pm	-0.03	8.2	24.3	S	12	18
23/11/09	3pm - 4pm	-0.02	12.3	17.1	S	11	18
23/11/09	4pm - 5pm	-0.01	8.2	9.3	S	13	18
23/11/09	5pm - 6pm	0.00	8.2	7.4	S	13	18
23/11/09	6pm - 7pm	0.00	6.2	19.0	S	13	18
23/11/09	7pm - 8pm	0.00	6.2	17.7	S	11	18
23/11/09	8pm - 9pm	-0.01	6.2	13.3	S	12	18
23/11/09	9pm - 10pm	-0.01	8.2	7.6	S	11	18
23/11/09	10pm - 11pm	-0.02	8.2	9.6	S	8	18
23/11/09	11pm - 12am	-0.03	10.3	19.3	S	8	18
24/11/09	12am - 1am	-0.04	8.2	17.5	S	7	18

Date	Hour	CO ppm	NO₂ µg/m³	PM₁₀ µg/m³	Wind Direction	Wind Velocity km/h	PM₁₀ µg/m³ (daily avg)
24/11/09	1am - 2am	-0.03		11.5	SSE	5	14
24/11/09	2am - 3am	-0.02	8.2	8.2	S	7	14
24/11/09	3am - 4am	-0.01	8.2	1.9	S	8	14
24/11/09	4am - 5am	0.00	6.2	13.5	S	9	14
24/11/09	5am - 6am	0.00	6.2	14.6	S	9	14
24/11/09	6am - 7am	0.01	10.3	18.1	S	9	14
24/11/09	7am - 8am	0.02	14.4	23.4	S	8	14
24/11/09	8am - 9am	0.04	14.4	19.8	S	8	14
24/11/09	9am - 10am	0.05	12.3	20.5	S	7	14
24/11/09	10am - 11am	0.05	22.6	19.4	S	5	14
24/11/09	11am - 12pm	0.06	10.3	10.8	S	8	14
24/11/09	12pm - 1pm	0.08	6.2	17.1	S	9	14
24/11/09	1pm - 2pm	0.09	6.2	5.9	S	9	14
24/11/09	2pm - 3pm	0.09	4.1	4.5	S	9	14
24/11/09	3pm - 4pm	0.09	6.2	6.3	S	8	14
24/11/09	4pm - 5pm	0.09	10.3	10.6	S	7	14
24/11/09	5pm - 6pm	0.08	10.3	10.1	S	6	14
24/11/09	6pm - 7pm	0.08	10.3	15.7	S	1	14
24/11/09	7pm - 8pm	0.07	8.2	19.3	S	5	14
24/11/09	8pm - 9pm	0.07	12.3	20.7	S	5	14
24/11/09	9pm - 10pm	0.07	12.3	19.8	S	5	14
24/11/09	10pm - 11pm	0.08	14.4	18.8	S	4	14
24/11/09	11pm - 12am	0.08	10.3	20.3	SSW	5	14
25/11/09	12am - 1am	0.09	8.2	16.7	SSW	5	14

Date	Hour	CO ppm	NO₂ µg/m³	PM₁₀ µg/m³	Wind Direction	Wind Velocity km/h	PM₁₀ µg/m³ (daily avg)
25/11/09	1am - 2am	0.09		11.6	WSW	3	15
25/11/09	2am - 3am	0.10	20.5	12.4	WNW	6	15
25/11/09	3am - 4am	0.10	14.4	18.1	WSW	6	15
25/11/09	4am - 5am	0.10	16.4	19.7	W	3	15
25/11/09	5am - 6am	0.11	22.6	17.4	NW	3	15
25/11/09	6am - 7am	0.12	26.7	15.1	NW	5	15
25/11/09	7am - 8am	0.15	30.8	22.8	WNW	5	15
25/11/09	8am - 9am	0.20	32.9	23.2	NW	4	15
25/11/09	9am - 10am	0.23	32.9	20.1	NNW	5	15
25/11/09	10am - 11am	0.24	22.6	9.0	NNW	4	15
25/11/09	11am - 12pm	0.25	16.4	10.9	NNE	6	15
25/11/09	12pm - 1pm	0.27	22.6	23.4	NE	7	15
25/11/09	1pm - 2pm	0.27	14.4	17.7	ENE	9	15
25/11/09	2pm - 3pm	0.26	12.3	11.0	ENE	10	15
25/11/09	3pm - 4pm	0.24	14.4	13.0	ENE	10	15
25/11/09	4pm - 5pm	0.21	14.4	9.7	NE	10	15
25/11/09	5pm - 6pm	0.17	14.4	1.9	NE	12	15
25/11/09	6pm - 7pm	0.16	14.4	14.9	NE	11	15
25/11/09	7pm - 8pm	0.17	14.4	13.9	NE	10	15
25/11/09	8pm - 9pm	0.17	14.4	16.0	NE	9	15
25/11/09	9pm - 10pm	0.18	16.4	15.1	NE	6	15
25/11/09	10pm - 11pm	0.19	16.4	15.5	NE	5	15
25/11/09	11pm - 12am	0.19	14.4	11.8	NE	5	15
26/11/09	12am - 1am	0.19					15

Station 3 (U1) - Hourly average readings for previous 7 calendar days.

Note: These figures have not been validated. To view the most recent validated data, please click here.
A grey background indicates that data is temporarily unavailable.

Date	Hour	CO ppm	NO₂ µg/m³	PM₁₀ µg/m³	Wind Direction	Wind Velocity km/h	PM₁₀ µg/m³ (daily avg)
19/11/09	1am - 2am	0.15		17.1	NNE	4	29
19/11/09	2am - 3am	0.14	18.5	15.4	N	3	29
19/11/09	3am - 4am	0.15	20.5	11.3	N	2	29
19/11/09	4am - 5am	0.16	22.6	14.1	NW	5	29
19/11/09	5am - 6am	0.17	26.7	14.0	NNW	5	29
19/11/09	6am - 7am	0.21	28.8	37.8	N	5	29
19/11/09	7am - 8am	0.24	30.8	14.9	N	6	29
19/11/09	8am - 9am	0.27	30.8	26.6	NNE	7	29
19/11/09	9am - 10am	0.28	28.8	21.4	NNE	6	29
19/11/09	10am - 11am	0.30	41.1	50.7	SE	14	29
19/11/09	11am - 12pm	0.31	30.8	33.7	ESE	14	29
19/11/09	12pm - 1pm	0.32	24.6	32.2	ENE	11	29
19/11/09	1pm - 2pm	0.32	16.4	21.9	ENE	16	29
19/11/09	2pm - 3pm	0.30	20.5	29.9	ENE	15	29
19/11/09	3pm - 4pm	0.29	22.6	30.0	ENE	15	29
19/11/09	4pm - 5pm	0.27	20.5	37.6	ENE	14	29
19/11/09	5pm - 6pm	0.27	18.5	32.3	NE	15	29
19/11/09	6pm - 7pm	0.26	22.6	34.8	NE	11	29
19/11/09	7pm - 8pm	0.26	37.0	31.2	ENE	7	29
19/11/09	8pm - 9pm	0.26	32.9	37.3	NNE	5	29
19/11/09	9pm - 10pm	0.26	37.0	37.5	ENE	4	29
19/11/09	10pm - 11pm	0.29	45.2	35.1	E	5	29
19/11/09	11pm - 12am	0.31	45.2	35.5	ESE	3	29
20/11/09	12am - 1am	0.32	41.1	36.6	E	7	29

Date	Hour	CO ppm	NO₂ µg/m³	PM₁₀ µg/m³	Wind Direction	Wind Velocity km/h	PM₁₀ µg/m³ (daily avg)
20/11/09	1am - 2am	0.33		23.4	NNE	0	31
20/11/09	2am - 3am	0.33	30.8	19.9	ESE	2	31
20/11/09	3am - 4am	0.31	24.6	18.4	WSW	2	31
20/11/09	4am - 5am	0.30	24.6	15.3	SW	3	31
20/11/09	5am - 6am	0.29	28.8	22.2	SSE	3	31
20/11/09	6am - 7am	0.29	28.8	48.5	NE	2	31
20/11/09	7am - 8am	0.30	39.0	44.7	NW	2	31
20/11/09	8am - 9am	0.33	45.2	20.1	NNW	4	31
20/11/09	9am - 10am	0.34	47.2	26.2	WNW	1	31
20/11/09	10am - 11am	0.39	63.7	68.9	NNW	3	31
20/11/09	11am - 12pm	0.46	90.4	57.5	NNW	5	31
20/11/09	12pm - 1pm	0.50	47.2	53.9	N	3	31
20/11/09	1pm - 2pm	0.52	41.1	43.7	ENE	15	31
20/11/09	2pm - 3pm	0.50	28.8	48.6	ENE	13	31
20/11/09	3pm - 4pm	0.49	57.5	41.1	E	5	31
20/11/09	4pm - 5pm	0.46	34.9	14.3	NE	19	31
20/11/09	5pm - 6pm	0.45	41.1	13.0	NE	13	31
20/11/09	6pm - 7pm	0.42	43.1	60.2	N	7	31
20/11/09	7pm - 8pm	0.37	43.1	21.6	NE	7	31
20/11/09	8pm - 9pm	0.36	69.8	30.1	NNE	5	31
20/11/09	9pm - 10pm	0.33	32.9	12.3	NNE	12	31
20/11/09	10pm - 11pm	0.31	20.5	5.1	NNE	10	31
20/11/09	11pm - 12am	0.26	12.3	9.0	NNE	15	31
21/11/09	12am - 1am	0.24	16.4	14.8	NNW	8	31

Date	Hour	CO ppm	NO₂ µg/m³	PM₁₀ µg/m³	Wind Direction	Wind Velocity km/h	PM₁₀ µg/m³ (daily avg)
21/11/09	1am - 2am	0.22		23.3	WSW	8	29
21/11/09	2am - 3am	0.19	6.2	25.0	S	28	29
21/11/09	3am - 4am	0.15	4.1	31.8	S	29	29
21/11/09	4am - 5am	0.09	2.1	27.6	S	25	29
21/11/09	5am - 6am	0.08	4.1	23.9	S	19	29
21/11/09	6am - 7am	0.08	8.2	22.8	SSW	12	29
21/11/09	7am - 8am	0.09	10.3	26.4	SSW	9	29
21/11/09	8am - 9am	0.10	10.3	25.1	WSW	7	29
21/11/09	9am - 10am	0.10	10.3	25.4	W	6	29
21/11/09	10am - 11am	0.11	14.4	30.5	S	5	29
21/11/09	11am - 12pm	0.12	8.2	24.1	SSE	14	29
21/11/09	12pm - 1pm	0.14	6.2	24.2	SSE	17	29
21/11/09	1pm - 2pm	0.15	8.2	30.6	SE	16	29
21/11/09	2pm - 3pm	0.16	8.2	14.1	SSE	17	29
21/11/09	3pm - 4pm	0.17	8.2	36.6	SE	18	29
21/11/09	4pm - 5pm	0.17	22.6	27.2	SE	14	29
21/11/09	5pm - 6pm	0.17	18.5	45.6	SSE	13	29
21/11/09	6pm - 7pm	0.17	30.8	33.2	ESE	19	29
21/11/09	7pm - 8pm	0.17	16.4	33.6	ESE	10	29
21/11/09	8pm - 9pm	0.17	32.9	40.7	SSE	5	29
21/11/09	9pm - 10pm	0.18	26.7	33.7	SW	4	29
21/11/09	10pm - 11pm	0.19	22.6	31.4	WSW	3	29
21/11/09	11pm - 12am	0.20	24.6	30.6	SW	3	29
22/11/09	12am - 1am	0.21	14.4	29.5	SSE	9	29

Date	Hour	CO ppm	NO₂ µg/m³	PM₁₀ µg/m³	Wind Direction	Wind Velocity km/h	PM₁₀ µg/m³ (daily avg)
22/11/09	1am - 2am	0.21		34.5	S	12	55
22/11/09	2am - 3am	0.21	4.1	31.7	S	10	55
22/11/09	3am - 4am	0.20	4.1	25.2	S	6	55
22/11/09	4am - 5am	0.19	4.1	19.6	WSW	4	55
22/11/09	5am - 6am	0.17	6.2	23.8	WNW	5	55
22/11/09	6am - 7am	0.17	16.4	29.8	NW	4	55
22/11/09	7am - 8am	0.16	14.4	31.3	NNW	5	55
22/11/09	8am - 9am	0.16	14.4	31.5	NNE	6	55
22/11/09	9am - 10am	0.18	18.5	30.0	NNE	8	55
22/11/09	10am - 11am	0.20	16.4	21.7	N	11	55
22/11/09	11am - 12pm	0.23	10.3	31.9	N	14	55
22/11/09	12pm - 1pm	0.26	10.3	36.0	N	18	55
22/11/09	1pm - 2pm	0.28	10.3	36.1	N	17	55
22/11/09	2pm - 3pm	0.29	10.3	63.0	N	18	55
22/11/09	3pm - 4pm	0.29	10.3	69.5	NW	19	55
22/11/09	4pm - 5pm	0.29	10.3	119.4	NNW	15	55
22/11/09	5pm - 6pm	0.30	16.4	127.7	NNW	10	55
22/11/09	6pm - 7pm	0.28	12.3	118.4	WNW	19	55
22/11/09	7pm - 8pm	0.26	10.3	88.5	W	20	55
22/11/09	8pm - 9pm	0.25	16.4	68.3	W	11	55
22/11/09	9pm - 10pm	0.24	18.5	56.7	W	14	55
22/11/09	10pm - 11pm	0.24	26.7	55.4	WSW	10	55
22/11/09	11pm - 12am	0.26	41.1	75.8	SSE	6	55
23/11/09	12am - 1am	0.25	12.3	83.4	S	24	55

Date	Hour	CO ppm	NO₂ µg/m³	PM₁₀ µg/m³	Wind Direction	Wind Velocity km/h	PM₁₀ µg/m³ (daily avg)
23/11/09	1am - 2am	0.23		31.5	S	33	23
23/11/09	2am - 3am	0.22	2.1	25.2	S	28	23
23/11/09	3am - 4am	0.20	2.1	27.2	SSE	27	23
23/11/09	4am - 5am	0.18	2.1	22.5	S	26	23
23/11/09	5am - 6am	0.15	4.1	24.5	S	24	23
23/11/09	6am - 7am	0.12	6.2	19.2	S	22	23
23/11/09	7am - 8am	0.08	8.2	33.7	SSE	25	23
23/11/09	8am - 9am	0.07	8.2	36.6	SSE	25	23
23/11/09	9am - 10am	0.07	6.2	29.9	SSE	25	23
23/11/09	10am - 11am	0.06	8.2	32.5	SSE	23	23
23/11/09	11am - 12pm	0.06	8.2	34.4	SSE	20	23
23/11/09	12pm - 1pm	0.06	10.3	27.3	SSE	19	23
23/11/09	1pm - 2pm	0.07	10.3	11.8	SSE	18	23
23/11/09	2pm - 3pm	0.07	10.3	32.4	SSE	18	23
23/11/09	3pm - 4pm	0.07	12.3	22.6	SSE	19	23
23/11/09	4pm - 5pm	0.07	10.3	13.1	SSE	20	23
23/11/09	5pm - 6pm	0.08	8.2	9.3	SSE	23	23
23/11/09	6pm - 7pm	0.08	8.2	24.3	S	17	23
23/11/09	7pm - 8pm	0.08	8.2	21.2	SSE	17	23
23/11/09	8pm - 9pm	0.08	8.2	16.7	SSE	17	23
23/11/09	9pm - 10pm	0.08	10.3	10.8	SSE	16	23
23/11/09	10pm - 11pm	0.08	8.2	11.5	SSE	15	23
23/11/09	11pm - 12am	0.07	10.3	23.0	S	11	23
24/11/09	12am - 1am	0.07	8.2	22.2	S	9	23

Date	Hour	CO ppm	NO₂ µg/m³	PM₁₀ µg/m³	Wind Direction	Wind Velocity km/h	PM₁₀ µg/m³ (daily avg)
24/11/09	1am - 2am	0.07		15.8	SE	12	18
24/11/09	2am - 3am	0.07	8.2	11.7	SSE	12	18
24/11/09	3am - 4am	0.08	10.3	5.8	SSE	11	18
24/11/09	4am - 5am	0.08	8.2	15.9	SSE	13	18
24/11/09	5am - 6am	0.08	6.2	17.1	S	15	18
24/11/09	6am - 7am	0.08	10.3	21.3	S	13	18
24/11/09	7am - 8am	0.09	16.4	28.2	SSE	14	18
24/11/09	8am - 9am	0.16	22.6	27.1	SSE	13	18
24/11/09	9am - 10am	0.16	14.4	26.6	SSE	11	18
24/11/09	10am - 11am	0.16	18.5	14.3	SE	15	18
24/11/09	11am - 12pm	0.16	12.3	18.3	SSE	14	18
24/11/09	12pm - 1pm	0.17	6.2	22.0	SSE	16	18
24/11/09	1pm - 2pm	0.17	8.2	14.6	SSE	14	18
24/11/09	2pm - 3pm	0.17	6.2	9.0	SSE	14	18
24/11/09	3pm - 4pm	0.16	6.2	11.3	SSE	12	18
24/11/09	4pm - 5pm	0.10	8.2	13.6	SSE	12	18
24/11/09	5pm - 6pm	0.10	8.2	13.6	SSE	11	18
24/11/09	6pm - 7pm	0.10	10.3	19.8	SSE	10	18
24/11/09	7pm - 8pm	0.09	10.3	23.0	SSE	8	18
24/11/09	8pm - 9pm	0.09	14.4	23.6	SSE	10	18
24/11/09	9pm - 10pm	0.10	14.4	22.7	S	7	18
24/11/09	10pm - 11pm	0.10	14.4	21.8	S	6	18
24/11/09	11pm - 12am	0.11	14.4	22.2	S	7	18
25/11/09	12am - 1am	0.11	8.2	21.1	SSW	4	18

Date	Hour	CO ppm	NO₂ µg/m³	PM₁₀ µg/m³	Wind Direction	Wind Velocity km/h	PM₁₀ µg/m³ (daily avg)
25/11/09	1am - 2am	0.11		13.0	W	5	18
25/11/09	2am - 3am	0.12	16.4	15.4	WNW	7	18
25/11/09	3am - 4am	0.12	12.3	18.9	W	7	18
25/11/09	4am - 5am	0.12	12.3	22.6	WNW	6	18
25/11/09	5am - 6am	0.13	22.6	20.1	NW	5	18
25/11/09	6am - 7am	0.14	26.7	18.2	NW	6	18
25/11/09	7am - 8am	0.16	28.8	26.1	WNW	5	18
25/11/09	8am - 9am	0.21	30.8	23.9	NW	5	18
25/11/09	9am - 10am	0.24	32.9	26.3	N	5	18
25/11/09	10am - 11am	0.25	20.5	11.5	N	6	18
25/11/09	11am - 12pm	0.26	14.4	12.9	N	7	18
25/11/09	12pm - 1pm	0.28	18.5	27.5	ENE	11	18
25/11/09	1pm - 2pm	0.29	10.3	18.2	ENE	16	18
25/11/09	2pm - 3pm	0.30					18
25/11/09	3pm - 4pm	0.28	10.3	18.4	ENE	15	18
25/11/09	4pm - 5pm	0.25	12.3	12.4	ENE	18	18
25/11/09	5pm - 6pm	0.21	10.3	7.2	ENE	16	18
25/11/09	6pm - 7pm	0.20	10.3	11.4	ENE	18	18
25/11/09	7pm - 8pm	0.20	10.3	17.4	ENE	17	18
25/11/09	8pm - 9pm	0.19	12.3	22.1	ENE	14	18
25/11/09	9pm - 10pm	0.18	14.4	19.3	ENE	12	18
25/11/09	10pm - 11pm	0.18	14.4	18.6	ENE	9	18
25/11/09	11pm - 12am	0.17	16.4	15.6	ENE	9	18
26/11/09	12am - 1am	0.17					18

Station 4 (T1) - Hourly average readings for previous 7 calendar days.

Note: These figures have not been validated. To view the most recent validated data, please click here.
A grey background indicates that data is temporarily unavailable.

Date	Hour	CO ppm	NO₂ µg/m³	PM₁₀ µg/m³	Wind Direction	Wind Velocity km/h	PM₁₀ µg/m³ (daily avg)
19/11/09	1am - 2am	0.13		21.1	NNE	2	32
19/11/09	2am - 3am	0.15	18.5	16.9	NNE	1	32
19/11/09	3am - 4am	0.16	16.4	10.8	WNW	1	32
19/11/09	4am - 5am	0.18	20.5	12.0	WNW	2	32
19/11/09	5am - 6am	0.20	24.6	18.3	N	1	32
19/11/09	6am - 7am	0.26	30.8	27.9	NNW	1	32
19/11/09	7am - 8am	0.31	37.0	33.6	N	3	32
19/11/09	8am - 9am	0.36	30.8	29.8	NE	7	32
19/11/09	9am - 10am	0.38	37.0	39.6	ENE	5	32
19/11/09	10am - 11am	0.41	47.2	49.4	SE	6	32
19/11/09	11am - 12pm	0.44	34.9	38.2	E	9	32
19/11/09	12pm - 1pm	0.46	28.8	37.5	ENE	8	32
19/11/09	1pm - 2pm	0.47	16.4	23.9	ENE	13	32
19/11/09	2pm - 3pm	0.46	18.5	31.5	ENE	11	32
19/11/09	3pm - 4pm	0.45	20.5	35.3	ENE	10	32
19/11/09	4pm - 5pm	0.45	20.5	35.6	ENE	12	32
19/11/09	5pm - 6pm	0.44	24.6	34.7	NE	10	32
19/11/09	6pm - 7pm	0.43	28.8	36.4	NE	11	32
19/11/09	7pm - 8pm	0.42	39.0	36.2	ENE	6	32
19/11/09	8pm - 9pm	0.42	26.7	41.9	NE	4	32
19/11/09	9pm - 10pm	0.42	39.0	40.4	ENE	2	32
19/11/09	10pm - 11pm	0.44	49.3	43.0	E	2	32
19/11/09	11pm - 12am	0.46	49.3	42.6	E	1	32
20/11/09	12am - 1am	0.46	34.9	42.0	ENE	3	32

Date	Hour	CO ppm	NO₂ µg/m³	PM₁₀ µg/m³	Wind Direction	Wind Velocity km/h	PM₁₀ µg/m³ (daily avg)
20/11/09	1am - 2am	0.46		28.1	ENE	1	36
20/11/09	2am - 3am	0.44	28.8	24.0	ENE	0	36
20/11/09	3am - 4am	0.41	26.7	16.9	W	2	36
20/11/09	4am - 5am	0.39	26.7	19.1	W	1	36
20/11/09	5am - 6am	0.38	26.7	23.8	W	1	36
20/11/09	6am - 7am	0.36	30.8	38.0	WNW	0	36
20/11/09	7am - 8am	0.38	47.2	79.3	WNW	1	36
20/11/09	8am - 9am	0.41	51.3	26.7	NNW	2	36
20/11/09	9am - 10am	0.44	55.5	34.5	NW	1	36
20/11/09	10am - 11am	0.49	67.8	59.3	NW	2	36
20/11/09	11am - 12pm	0.57	92.4	69.1	WNW	2	36
20/11/09	12pm - 1pm	0.63	55.5	56.5	NNE	1	36
20/11/09	1pm - 2pm	0.68	47.2	49.6	ENE	10	36
20/11/09	2pm - 3pm	0.68	34.9	44.8	ENE	10	36
20/11/09	3pm - 4pm	0.68	76.0	52.3	E	3	36
20/11/09	4pm - 5pm	0.65	39.0	34.3	NE	16	36
20/11/09	5pm - 6pm	0.62	49.3	26.0	NE	9	36
20/11/09	6pm - 7pm	0.57	45.2	53.9	NNE	5	36
20/11/09	7pm - 8pm	0.51	55.5	34.7	NE	3	36
20/11/09	8pm - 9pm	0.47	65.7	33.3	NE	2	36
20/11/09	9pm - 10pm	0.42	37.0	17.7	NNE	9	36
20/11/09	10pm - 11pm	0.38	24.6	13.4	NNE	8	36
20/11/09	11pm - 12am	0.30	16.4	14.6	NNE	12	36
21/11/09	12am - 1am	0.26	22.6	17.5	NW	5	36

Date	Hour	CO ppm	NO₂ µg/m³	PM₁₀ µg/m³	Wind Direction	Wind Velocity km/h	PM₁₀ µg/m³ (daily avg)
21/11/09	1am - 2am	0.26		23.8	WSW	4	32
21/11/09	2am - 3am	0.25	10.3	31.5	SSW	11	32
21/11/09	3am - 4am	0.22	8.2	31.5	S	12	32
21/11/09	4am - 5am	0.18	6.2	28.6	S	9	32
21/11/09	5am - 6am	0.17	8.2	26.8	S	6	32
21/11/09	6am - 7am	0.18	12.3	26.9	SSW	6	32
21/11/09	7am - 8am	0.20	14.4	28.4	SW	5	32
21/11/09	8am - 9am	0.23	14.4	27.4	SW	5	32
21/11/09	9am - 10am	0.23	14.4	29.5	WSW	4	32
21/11/09	10am - 11am	0.25	20.5	34.1	S	4	32
21/11/09	11am - 12pm	0.27	16.4	27.2	SSE	8	32
21/11/09	12pm - 1pm	0.28	14.4	25.9	SSE	10	32
21/11/09	1pm - 2pm	0.30	18.5	32.1	SSE	9	32
21/11/09	2pm - 3pm	0.32	14.4	23.8	SE	7	32
21/11/09	3pm - 4pm	0.33	14.4	38.7	SSE	9	32
21/11/09	4pm - 5pm	0.34	30.8	30.1	SE	7	32
21/11/09	5pm - 6pm	0.34	28.8	42.5	SSE	6	32
21/11/09	6pm - 7pm	0.32	39.0	37.9	SE	5	32
21/11/09	7pm - 8pm	0.32	28.8	42.5	ESE	4	32
21/11/09	8pm - 9pm	0.31	39.0	45.0	SSE	2	32
21/11/09	9pm - 10pm	0.30	32.9	37.7	SW	2	32
21/11/09	10pm - 11pm	0.29	34.9	35.2	WSW	1	32
21/11/09	11pm - 12am	0.28	34.9	35.3	SSW	1	32
22/11/09	12am - 1am	0.27	24.6	33.9	S	3	32

Date	Hour	CO ppm	NO₂ µg/m³	PM₁₀ µg/m³	Wind Direction	Wind Velocity km/h	PM₁₀ µg/m³ (daily avg)
22/11/09	1am - 2am	0.26		36.8	S	5	60
22/11/09	2am - 3am	0.27	10.3	34.9	SSE	5	60
22/11/09	3am - 4am	0.27	10.3	31.2	S	2	60
22/11/09	4am - 5am	0.27	8.2	24.3	SW	2	60
22/11/09	5am - 6am	0.27	10.3	25.3	W	1	60
22/11/09	6am - 7am	0.27	16.4	32.6	NW	1	60
22/11/09	7am - 8am	0.28	18.5	33.6	NNW	2	60
22/11/09	8am - 9am	0.30	16.4	34.2	NNE	5	60
22/11/09	9am - 10am	0.32	20.5	35.3	NE	6	60
22/11/09	10am - 11am	0.34	24.6	32.1	NNE	7	60
22/11/09	11am - 12pm	0.36	14.4	40.4	NNW	7	60
22/11/09	12pm - 1pm	0.40	14.4	45.6	N	9	60
22/11/09	1pm - 2pm	0.44	14.4	48.0	N	10	60
22/11/09	2pm - 3pm	0.48	14.4	67.1	N	9	60
22/11/09	3pm - 4pm	0.50	12.3	90.8	WNW	14	60
22/11/09	4pm - 5pm	0.52	14.4	127.1	NW	8	60
22/11/09	5pm - 6pm	0.54	22.6	133.6	NNW	5	60
22/11/09	6pm - 7pm	0.53	18.5	119.2	W	13	60
22/11/09	7pm - 8pm	0.51	16.4	90.1	W	12	60
22/11/09	8pm - 9pm	0.50	20.5	75.1	WSW	5	60
22/11/09	9pm - 10pm	0.47	20.5	61.7	W	8	60
22/11/09	10pm - 11pm	0.43	26.7	58.5	SW	5	60
22/11/09	11pm - 12am	0.44	57.5	83.5	SSE	2	60
23/11/09	12am - 1am	0.41	16.4	83.7	S	10	60

Date	Hour	CO ppm	NO₂ µg/m³	PM₁₀ µg/m³	Wind Direction	Wind Velocity km/h	PM₁₀ µg/m³ (daily avg)
23/11/09	1am - 2am	0.38		40.5	S	14	27
23/11/09	2am - 3am	0.34	8.2	32.6	SSE	14	27
23/11/09	3am - 4am	0.30	4.1	31.3	SSE	14	27
23/11/09	4am - 5am	0.25	6.2	27.3	S	12	27
23/11/09	5am - 6am	0.21	8.2	28.3	SSE	11	27
23/11/09	6am - 7am	0.18	12.3	25.8	S	9	27
23/11/09	7am - 8am	0.12	14.4	30.6	SSE	11	27
23/11/09	8am - 9am	0.10	16.4	33.6	SSE	11	27
23/11/09	9am - 10am	0.11	14.4	31.8	SSE	11	27
23/11/09	10am - 11am	0.12	20.5	34.5	SSE	9	27
23/11/09	11am - 12pm	0.13	14.4	36.3	SSE	8	27
23/11/09	12pm - 1pm	0.14	18.5	26.8	SSE	7	27
23/11/09	1pm - 2pm	0.15	20.5	18.9	SSE	6	27
23/11/09	2pm - 3pm	0.16	20.5	31.0	SSE	7	27
23/11/09	3pm - 4pm	0.17	24.6	26.1	SSE	8	27
23/11/09	4pm - 5pm	0.17	24.6	21.2	SSE	10	27
23/11/09	5pm - 6pm	0.16	16.4	17.3	SSE	9	27
23/11/09	6pm - 7pm	0.15	16.4	26.3	SSE	7	27
23/11/09	7pm - 8pm	0.14	14.4	24.2	SSE	7	27
23/11/09	8pm - 9pm	0.12	18.5	19.2	SSE	8	27
23/11/09	9pm - 10pm	0.11	20.5	14.7	SSE	7	27
23/11/09	10pm - 11pm	0.09	16.4	16.2	SSE	6	27
23/11/09	11pm - 12am	0.08	18.5	24.1	S	3	27
24/11/09	12am - 1am	0.06	14.4	24.1	SSW	2	27

Date	Hour	CO ppm	NO₂ µg/m³	PM₁₀ µg/m³	Wind Direction	Wind Velocity km/h	PM₁₀ µg/m³ (daily avg)
24/11/09	1am - 2am	0.06		18.1	ESE	3	23
24/11/09	2am - 3am	0.06	10.3	15.8	SSE	5	23
24/11/09	3am - 4am	0.07	18.5	12.0	SSE	4	23
24/11/09	4am - 5am	0.07	18.5	20.2	SSE	5	23
24/11/09	5am - 6am	0.08	14.4	22.3	S	5	23
24/11/09	6am - 7am	0.10	20.5	23.4	S	6	23
24/11/09	7am - 8am	0.13	28.8	29.7	SSE	5	23
24/11/09	8am - 9am	0.17	32.9	31.4	SSE	6	23
24/11/09	9am - 10am	0.17	20.5	26.1	SSE	4	23
24/11/09	10am - 11am	0.18	26.7	23.0	SE	5	23
24/11/09	11am - 12pm	0.21	24.6	34.9	SSE	6	23
24/11/09	12pm - 1pm	0.22	16.4	24.8	SSE	8	23
24/11/09	1pm - 2pm	0.23	12.3	15.6	S	7	23
24/11/09	2pm - 3pm	0.24	14.4	12.6	S	7	23
24/11/09	3pm - 4pm	0.23	14.4	14.5	SSE	6	23
24/11/09	4pm - 5pm	0.22	16.4	17.3	SSE	6	23
24/11/09	5pm - 6pm	0.23	20.5	18.7	SSE	5	23
24/11/09	6pm - 7pm	0.23	22.6	25.8	SE	3	23
24/11/09	7pm - 8pm	0.22	18.5	27.3	SSE	2	23
24/11/09	8pm - 9pm	0.22	26.7	28.1	SSE	4	23
24/11/09	9pm - 10pm	0.23	30.8	26.2	S	2	23
24/11/09	10pm - 11pm	0.22	24.6	25.1	S	2	23
24/11/09	11pm - 12am	0.21	24.6	26.0	S	3	23
25/11/09	12am - 1am	0.19	14.4	22.8	SSW	2	23

Date	Hour	CO ppm	NO₂ µg/m³	PM₁₀ µg/m³	Wind Direction	Wind Velocity km/h	PM₁₀ µg/m³ (daily avg)
25/11/09	1am - 2am	0.19		18.0	W	2	22
25/11/09	2am - 3am	0.18	20.5	20.7	WNW	4	22
25/11/09	3am - 4am	0.16	18.5	27.6	W	5	22
25/11/09	4am - 5am	0.15	16.4	26.5	WNW	2	22
25/11/09	5am - 6am	0.14	24.6	23.2	WNW	1	22
25/11/09	6am - 7am	0.15	32.9	25.5	WNW	3	22
25/11/09	7am - 8am	0.18	37.0	28.4	WNW	3	22
25/11/09	8am - 9am	0.23	39.0	30.7	NW	3	22
25/11/09	9am - 10am	0.27	37.0	28.8	NW	2	22
25/11/09	10am - 11am	0.28	24.6	16.7	NNW	4	22
25/11/09	11am - 12pm	0.30	20.5	16.1	NNE	3	22
25/11/09	12pm - 1pm	0.32	22.6	26.1	NE	9	22
25/11/09	1pm - 2pm	0.33	16.4	32.8	ENE	12	22
25/11/09	2pm - 3pm	0.34	16.4	26.3	ENE	10	22
25/11/09	3pm - 4pm	0.33	14.4	19.5	ENE	13	22
25/11/09	4pm - 5pm	0.30	12.3	13.4	ENE	14	22
25/11/09	5pm - 6pm	0.26	12.3	10.7	ENE	15	22
25/11/09	6pm - 7pm	0.25	12.3	19.7	ENE	12	22
25/11/09	7pm - 8pm	0.24	14.4	18.9	ENE	11	22
25/11/09	8pm - 9pm	0.23	14.4	20.2	ENE	9	22
25/11/09	9pm - 10pm	0.22	20.5	21.1	ENE	7	22
25/11/09	10pm - 11pm	0.20	18.5	21.0	ENE	5	22
25/11/09	11pm - 12am	0.19	18.5	20.2	ENE	5	22
26/11/09	12am - 1am	0.18					22

Station 5 (CBMS) - Hourly average readings for previous 7 calendar days.

Note: These figures have not been validated. To view the most recent validated data, please click here.
A grey background indicates that data is temporarily unavailable.

Date	Hour	CO ppm	NO₂ µg/m³	PM₁₀ µg/m³	Wind Direction	Wind Velocity km/h	PM₁₀ µg/m³ (daily avg)
19/11/09	1am - 2am	0.08		25.3	NNE	6	33
19/11/09	2am - 3am	0.09	16.4	20.9	N	7	33
19/11/09	3am - 4am	0.09	20.5	21.0	N	5	33
19/11/09	4am - 5am	0.10	24.6	19.9	NW	7	33
19/11/09	5am - 6am	0.12	24.6	19.0	NNW	7	33
19/11/09	6am - 7am	0.16	34.9	24.7	NNW	6	33
19/11/09	7am - 8am	0.20	32.9	27.7	N	9	33
19/11/09	8am - 9am	0.23	32.9	29.3	NNE	10	33
19/11/09	9am - 10am	0.23	28.8	24.0	NNE	9	33
19/11/09	10am - 11am	0.24	37.0	49.6	SE	12	33
19/11/09	11am - 12pm	0.25	34.9	35.2	E	12	33
19/11/09	12pm - 1pm	0.25	30.8	42.7	ENE	12	33
19/11/09	1pm - 2pm	0.24	18.5	21.5	NE	21	33
19/11/09	2pm - 3pm	0.22	20.5	28.4	ENE	19	33
19/11/09	3pm - 4pm	0.20	24.6	36.9	NE	18	33
19/11/09	4pm - 5pm	0.19	22.6	35.8	NE	21	33
19/11/09	5pm - 6pm	0.18	26.7	33.1	NNE	23	33
19/11/09	6pm - 7pm	0.17	30.8	35.1	NE	20	33
19/11/09	7pm - 8pm	0.18	37.0	34.7	NE	12	33
19/11/09	8pm - 9pm	0.18	30.8	42.1	NNE	9	33
19/11/09	9pm - 10pm	0.18	39.0	43.3	NE	8	33
19/11/09	10pm - 11pm	0.21	47.2	43.6	ENE	8	33
19/11/09	11pm - 12am	0.23	49.3	45.1	E	5	33
20/11/09	12am - 1am	0.24	39.0	42.6	ENE	10	33

Date	Hour	CO ppm	NO₂ µg/m³	PM₁₀ µg/m³	Wind Direction	Wind Velocity km/h	PM₁₀ µg/m³ (daily avg)
20/11/09	1am - 2am	0.25		32.1	E	3	34
20/11/09	2am - 3am	0.26	34.9	29.8	ESE	5	34
20/11/09	3am - 4am	0.26	28.8	26.0	SE	2	34
20/11/09	4am - 5am	0.26	30.8	30.2	S	3	34
20/11/09	5am - 6am	0.27	32.9	22.8	SSE	3	34
20/11/09	6am - 7am	0.27	32.9	45.0	NE	3	34
20/11/09	7am - 8am	0.31	49.3	53.7	NW	3	34
20/11/09	8am - 9am	0.35	53.4	21.6	NNW	14	34
20/11/09	9am - 10am	0.37	51.3	38.1	WSW	2	34
20/11/09	10am - 11am	0.41	67.8	57.6	N	6	34
20/11/09	11am - 12pm	0.49	100.6	68.2	NNE	4	34
20/11/09	12pm - 1pm	0.53	67.8	85.9	ENE	3	34
20/11/09	1pm - 2pm	0.57	51.3	26.7	NE	15	34
20/11/09	2pm - 3pm	0.58		38.8	ENE	16	34
20/11/09	3pm - 4pm	0.55	61.6	46.7	ENE	3	34
20/11/09	4pm - 5pm	0.53	39.0	22.7	NE	28	34
20/11/09	5pm - 6pm	0.52	51.3	10.2	NE	22	34
20/11/09	6pm - 7pm	0.50	43.1	57.6	N	15	34
20/11/09	7pm - 8pm	0.46	43.1	33.0	NNE	12	34
20/11/09	8pm - 9pm	0.45	69.8	26.8	NNE	10	34
20/11/09	9pm - 10pm	0.42	32.9	16.1	NNE	20	34
20/11/09	10pm - 11pm	0.41	22.6	6.4	NNE	18	34
20/11/09	11pm - 12am	0.39	16.4	8.6	NNE	25	34
21/11/09	12am - 1am	0.38	18.5	18.7	NNW	12	34

Date	Hour	CO ppm	NO₂ µg/m³	PM₁₀ µg/m³	Wind Direction	Wind Velocity km/h	PM₁₀ µg/m³ (daily avg)
21/11/09	1am - 2am	0.37		29.1	WSW	11	31
21/11/09	2am - 3am	0.33	8.2	24.4	S	29	31
21/11/09	3am - 4am	0.27	6.2	31.1	S	28	31
21/11/09	4am - 5am	0.20	8.2	29.2	SSE	24	31
21/11/09	5am - 6am	0.15	8.2	25.9	SSE	19	31
21/11/09	6am - 7am	0.12	10.3	24.4	S	11	31
21/11/09	7am - 8am	0.08	12.3	26.5	SSW	7	31
21/11/09	8am - 9am	0.05	12.3	25.4	SW	6	31
21/11/09	9am - 10am	0.06	12.3	26.8	WSW	6	31
21/11/09	10am - 11am	0.06	14.4	31.6	S	5	31
21/11/09	11am - 12pm	0.06	10.3	26.1	SE	11	31
21/11/09	12pm - 1pm	0.07	8.2	26.7	SE	15	31
21/11/09	1pm - 2pm	0.07	10.3	32.5	SE	14	31
21/11/09	2pm - 3pm	0.08	10.3	19.3	SE	14	31
21/11/09	3pm - 4pm	0.08	6.2	35.4	SE	17	31
21/11/09	4pm - 5pm	0.07	12.3	33.5	SE	15	31
21/11/09	5pm - 6pm	0.06	20.5	48.6	SE	11	31
21/11/09	6pm - 7pm	0.05	22.6	39.8	SE	10	31
21/11/09	7pm - 8pm	0.05	26.7	36.2	ESE	9	31
21/11/09	8pm - 9pm	0.05	34.9	37.7	SE	5	31
21/11/09	9pm - 10pm	0.04	28.8	38.3	S	4	31
21/11/09	10pm - 11pm	0.05	24.6	44.1	SW	5	31
21/11/09	11pm - 12am	0.05	28.8	32.0	SSW	3	31
22/11/09	12am - 1am	0.05	18.5	30.3	SSE	8	31

Date	Hour	CO ppm	NO₂ µg/m³	PM₁₀ µg/m³	Wind Direction	Wind Velocity km/h	PM₁₀ µg/m³ (daily avg)
22/11/09	1am - 2am	0.05		42.2	SSE	11	58
22/11/09	2am - 3am	0.06	6.2	33.2	SSE	9	58
22/11/09	3am - 4am	0.07	6.2	25.5	S	7	58
22/11/09	4am - 5am	0.08	6.2	27.0	SW	4	58
22/11/09	5am - 6am	0.09	8.2	24.1	W	4	58
22/11/09	6am - 7am	0.10	16.4	31.0	WNW	5	58
22/11/09	7am - 8am	0.11	22.6	36.2	NNW	18	58
22/11/09	8am - 9am	0.13	16.4	30.1	N	33	58
22/11/09	9am - 10am	0.15	20.5	32.7	NNE	14	58
22/11/09	10am - 11am	0.17	18.5	12.0	N	19	58
22/11/09	11am - 12pm	0.20	12.3	36.6	NNW	25	58
22/11/09	12pm - 1pm	0.24	10.3	34.0	NNW	32	58
22/11/09	1pm - 2pm	0.28	12.3	40.2	N	28	58
22/11/09	2pm - 3pm	0.32	10.3	66.8	N	29	58
22/11/09	3pm - 4pm	0.34	10.3	64.1	NW	32	58
22/11/09	4pm - 5pm	0.37	10.3	111.0	NNW	27	58
22/11/09	5pm - 6pm	0.40	14.4	133.6	NNW	20	58
22/11/09	6pm - 7pm	0.41	14.4	126.5	W	27	58
22/11/09	7pm - 8pm	0.40	10.3	96.5	WSW	22	58
22/11/09	8pm - 9pm	0.39	14.4	89.1	WSW	11	58
22/11/09	9pm - 10pm	0.38	24.6	62.0	W	17	58
22/11/09	10pm - 11pm	0.35	18.5	64.6	WSW	11	58
22/11/09	11pm - 12am	0.35	34.9	85.2	SSE	9	58
23/11/09	12am - 1am	0.32	14.4	91.2	SSE	23	58

Date	Hour	CO ppm	NO₂ µg/m³	PM₁₀ µg/m³	Wind Direction	Wind Velocity km/h	PM₁₀ µg/m³ (daily avg)
23/11/09	1am - 2am	0.29		27.9	SSE	29	23
23/11/09	2am - 3am	0.25	4.1	27.8	SSE	25	23
23/11/09	3am - 4am	0.22	4.1	25.3	SSE	25	23
23/11/09	4am - 5am	0.19	4.1	25.2	SSE	24	23
23/11/09	5am - 6am	0.16	4.1	25.3	SSE	22	23
23/11/09	6am - 7am	0.14	6.2	13.5	SSE	21	23
23/11/09	7am - 8am	0.10	8.2	32.5	SSE	20	23
23/11/09	8am - 9am	0.09	6.2	26.3	SSE	21	23
23/11/09	9am - 10am	0.09	6.2	21.2	SSE	19	23
23/11/09	10am - 11am	0.10	6.2	32.1	SE	18	23
23/11/09	11am - 12pm	0.10	6.2	39.0	SSE	16	23
23/11/09	12pm - 1pm	0.10	10.3	26.9	SSE	15	23
23/11/09	1pm - 2pm	0.10	8.2	8.4	SSE	15	23
23/11/09	2pm - 3pm	0.10	12.3	35.5	SSE	14	23
23/11/09	3pm - 4pm	0.10	12.3	25.6	SSE	15	23
23/11/09	4pm - 5pm	0.10	10.3	10.0	SSE	16	23
23/11/09	5pm - 6pm	0.10	8.2	-1.1	SSE	18	23
23/11/09	6pm - 7pm	0.10	8.2	39.4	SSE	16	23
23/11/09	7pm - 8pm	0.11	8.2	24.4	SSE	13	23
23/11/09	8pm - 9pm	0.11	6.2	19.5	SSE	15	23
23/11/09	9pm - 10pm	0.12	8.2	11.9	SSE	13	23
23/11/09	10pm - 11pm	0.12	8.2	11.7	SSE	12	23
23/11/09	11pm - 12am	0.12	10.3	18.9	SSE	10	23
24/11/09	12am - 1am	0.12	10.3	25.5	SSE	9	23

Date	Hour	CO ppm	NO₂ µg/m³	PM₁₀ µg/m³	Wind Direction	Wind Velocity km/h	PM₁₀ µg/m³ (daily avg)
24/11/09	1am - 2am	0.12		19.7	SE	10	20
24/11/09	2am - 3am	0.11	6.2	12.1	SE	11	20
24/11/09	3am - 4am	0.11	8.2	3.8	SSE	10	20
24/11/09	4am - 5am	0.10	6.2	19.4	SSE	11	20
24/11/09	5am - 6am	0.10	6.2	18.4	SSE	12	20
24/11/09	6am - 7am	0.10	12.3	26.3	SSE	12	20
24/11/09	7am - 8am	0.10	12.3	30.0	SSE	11	20
24/11/09	8am - 9am	0.10	16.4	27.1	SSE	10	20
24/11/09	9am - 10am	0.10	12.3	24.2	SSE	10	20
24/11/09	10am - 11am	0.09	12.3	18.3	SE	11	20
24/11/09	11am - 12pm	0.10	8.2	16.2	SSE	13	20
24/11/09	12pm - 1pm	0.09	8.2	19.0	SSE	13	20
24/11/09	1pm - 2pm	0.09	8.2	11.6	SSE	12	20
24/11/09	2pm - 3pm	0.08	6.2	6.5	SSE	14	20
24/11/09	3pm - 4pm	0.07	6.2	8.7	SSE	10	20
24/11/09	4pm - 5pm	0.06	8.2	12.0	SSE	10	20
24/11/09	5pm - 6pm	0.06	10.3	17.0	SSE	8	20
24/11/09	6pm - 7pm	0.07	10.3	21.4	SE	8	20
24/11/09	7pm - 8pm	0.06	12.3	26.7	SSE	6	20
24/11/09	8pm - 9pm	0.07	12.3	27.6	SSE	7	20
24/11/09	9pm - 10pm	0.07	12.3	28.5	SSE	7	20
24/11/09	10pm - 11pm	0.08	16.4	26.3	SSE	5	20
24/11/09	11pm - 12am	0.08	12.3	28.8	SSE	6	20
25/11/09	12am - 1am	0.08	10.3	26.5	S	4	20

Date	Hour	CO ppm	NO₂ µg/m³	PM₁₀ µg/m³	Wind Direction	Wind Velocity km/h	PM₁₀ µg/m³ (daily avg)
25/11/09	1am - 2am	0.08		16.2	W	3	20
25/11/09	2am - 3am	0.09	20.5	18.6	WNW	9	20
25/11/09	3am - 4am	0.09	14.4	24.9	W	8	20
25/11/09	4am - 5am	0.09	14.4	24.9	W	6	20
25/11/09	5am - 6am	0.10	22.6	21.1	NW	5	20
25/11/09	6am - 7am	0.11	28.8	19.0	NW	8	20
25/11/09	7am - 8am	0.15	34.9	27.5	NW	7	20
25/11/09	8am - 9am	0.19	34.9	25.8	NW	7	20
25/11/09	9am - 10am	0.22	34.9	23.5	NNW	10	20
25/11/09	10am - 11am	0.23	22.6	13.7	N	12	20
25/11/09	11am - 12pm	0.24	16.4	14.8	N	11	20
25/11/09	12pm - 1pm	0.25	24.6	26.0	NE	14	20
25/11/09	1pm - 2pm	0.25	16.4	22.6	NE	20	20
25/11/09	2pm - 3pm	0.25	14.4	26.3	ENE	17	20
25/11/09	3pm - 4pm	0.23	14.4	19.2	NE	22	20
25/11/09	4pm - 5pm	0.21	10.3	10.5	NE	25	20
25/11/09	5pm - 6pm	0.18	10.3	4.7	NE	25	20
25/11/09	6pm - 7pm	0.18	12.3	20.1	NE	22	20
25/11/09	7pm - 8pm	0.18	14.4	19.7	NE	22	20
25/11/09	8pm - 9pm	0.17	14.4	21.9	NE	19	20
25/11/09	9pm - 10pm	0.16	16.4	19.9	NE	16	20
25/11/09	10pm - 11pm	0.15	16.4	19.8	NE	13	20
25/11/09	11pm - 12am	0.15	16.4	16.9	NE	12	20
26/11/09	12am - 1am	0.14					20

M5 East Air quality