Readings on 23 Aug 2015

View reading for:

Region	24-hr Sulphur dioxide (µg/m³)	24-hr PM₁₀ (µg/m³)	1-hr Nitrogen dioxide (µg/m³)^a	8-hr Ozone (µg/m³)	8-hr Carbon monoxide (mg/m³)	24-hr PM_2.5 (µg/m³)
North	7(4)	58(55)	36(-)	52(22)	0.5(5)	42(85)
South	15(10)	60(55)	19(-)	44(18)	0.6(6)	44(87)
East	8(5)	52(51)	7(-)	51(22)	0.5(5)	36(78)
West	21(13)	62(56)	27(-)	46(19)	0.5(5)	46(90)
Central	8(5)	53(52)	18(-)	53(22)	0.4(4)	38(80)

1-hr PM_2.5 (µg/m³)^b Readings on 22 Aug 2015

View reading for:

Time	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm
North	37	50	43	43	53	45	36	33	41	36	46	57
South	52	41	56	51	44	52	46	38	44	51	40	38
East	30	35	44	33	34	49	31	30	31	39	38	22
West	50	53	53	49	52	40	50	57	56	56	52	56
Central	42	39	41	42	37	40	32	34	37	39	45	42
Time	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm	12am
North	47	55	46	43	45	33	34	36	35	36	44	30
South	46	45	39	41	34	47	49	38	43	45	47	31
East	29	30	38	32	40	43	41	39	36	38	40	33
West	49	43	38	35	40	42	44	43	36	42	40	40
Central	38	47	40	35	30	36	36	38	30	35	36	28

Note:
^a Sub-index for nitrogen dioxide is reported only when the 1-hour concentration exceeds 1130 µg/m³.
^b There is no sub-index for 1-h PM_2.5.

3-hr PSI Readings from 1am to 12am on 22 Aug 2015

Time	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm
3-hr PSI	74	82	88	88	88	87	85	83	82	84	86	87
Time	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm	12am
3-hr PSI	87	86	85	83	81	81	82	83	81	80	81	80

The real-time data is automatically published as soon as it is generated by our air monitoring stations. The data is subject to verification and correction subsequently if necessary.

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