Readings on 10 Jul 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	9(6)	39(39)	57(-)	37(16)	0.6(6)	26(66)
South	36(22)	45(45)	113(-)	37(16)	0.6(6)	32(74)
East	28(17)	39(39)	3(-)	35(15)	0.9(9)	31(72)
West	30(19)	41(41)	38(-)	45(19)	0.7(7)	28(70)
Central	22(14)	45(45)	60(-)	41(17)	0.5(5)	30(71)

1-hr PM_2.5 (µg/m³)^b Readings on 09 Jul 2015

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Time	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm
North	21	23	34	33	28	42	38	32	27	42	36	29
South	37	37	35	38	26	34	20	18	24	36	28	27
East	23	26	32	29	30	27	20	16	25	30	29	27
West	38	46	40	39	30	25	35	29	29	21	18	18
Central	32	30	26	28	30	33	24	27	24	25	16	23
Time	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm	12am
North	21	12	12	16	23	17	14	16	27	20	24	28
South	25	30	36	32	36	37	54	36	24	48	27	26
East	35	36	37	41	36	36	30	42	33	30	36	35
West	28	27	30	33	36	17	20	19	20	23	30	34
Central	31	34	39	38	40	37	36	36	29	31	26	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 09 Jul 2015

Time	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm
3-hr PSI	65	69	74	75	73	73	71	69	67	68	69	68
Time	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm	12am
3-hr PSI	67	68	70	71	74	73	73	71	70	70	70	71

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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