Readings on 09 Jul 2015

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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(5)	34(34)	30(-)	21(9)	0.5(5)	21(61)
South	19(12)	37(37)	197(-)	15(6)	0.6(6)	22(62)
East	17(10)	29(29)	4(-)	18(8)	0.7(7)	21(61)
West	40(25)	41(41)	51(-)	26(11)	0.6(6)	26(66)
Central	7(4)	35(35)	29(-)	13(6)	0.6(6)	21(62)

1-hr PM_2.5 (µg/m³)^b Readings on 08 Jul 2015

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Time	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm
North	13	16	21	21	19	21	23	26	23	22	19	18
South	23	24	24	20	20	17	19	23	23	20	23	32
East	24	20	24	20	22	20	20	17	16	19	19	24
West	20	22	22	26	25	25	26	31	26	34	34	36
Central	21	23	23	19	22	17	17	21	18	18	17	25
Time	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm	12am
North	27	41	38	30	31	32	16	5	8	10	11	8
South	19	29	15	21	20	34	16	27	11	20	26	21
East	28	31	23	25	20	31	22	11	8	14	19	22
West	41	37	21	12	13	21	4	16	27	31	35	30
Central	24	30	31	26	29	32	20	13	7	12	20	26

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 08 Jul 2015

Time	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm
3-hr PSI	61	61	62	62	62	61	61	62	62	63	62	64
Time	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm	12am
3-hr PSI	66	71	70	68	64	66	63	60	53	54	57	60

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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