Readings on 06 Aug 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	10(6)	28(28)	45(-)	24(10)	0.5(5)	18(58)
South	14(9)	25(25)	37(-)	30(13)	0.4(4)	15(54)
East	6(4)	22(22)	17(-)	30(13)	0.8(8)	15(54)
West	35(22)	30(30)	34(-)	19(8)	0.3(3)	17(57)
Central	10(6)	24(24)	39(-)	24(10)	0.6(6)	14(53)

1-hr PM_2.5 (µg/m³)^b Readings on 05 Aug 2015

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Time	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm
North	16	11	14	13	17	14	15	16	15	12	20	21
South	12	10	11	22	18	14	9	13	7	10	13	11
East	11	10	10	16	17	14	17	14	12	15	16	15
West	18	10	4	11	15	9	13	21	18	22	20	28
Central	7	13	10	13	15	17	14	17	12	10	11	12
Time	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm	12am
North	18	28	18	22	22	19	26	34	21	16	18	14
South	17	20	13	19	19	18	18	14	21	16	12	12
East	20	22	18	17	24	13	18	14	11	11	9	12
West	29	45	26	17	26	12	19	17	13	21	13	11
Central	17	20	14	19	21	11	14	14	12	11	6	14

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 05 Aug 2015

Time	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm
3-hr PSI	53	52	47	50	53	54	54	54	53	54	54	55
Time	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm	12am
3-hr PSI	57	60	60	59	60	58	59	57	57	56	53	52

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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