Readings on 29 Jun 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	5(3)	18(18)	33(-)	21(9)	0.4(4)	9(39)
South	8(5)	21(21)	7(-)	16(7)	0.4(4)	9(37)
East	6(4)	17(17)	24(-)	20(8)	0.8(8)	10(43)
West	50(31)	32(32)	35(-)	21(9)	0.4(4)	12(51)
Central	5(3)	20(20)	37(-)	16(7)	0.6(6)	8(34)

1-hr PM_2.5 (µg/m³)^b Readings on 28 Jun 2015

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Time	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm
North	5	5	5	6	5	9	5	11	5	9	5	14
South	10	11	3	11	5	8	4	11	6	10	8	3
East	5	5	11	8	6	5	8	8	8	10	10	14
West	9	9	8	11	8	14	4	14	9	13	8	18
Central	5	4	6	9	10	7	6	11	5	5	11	7
Time	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm	12am
North	17	12	13	14	8	14	11	7	8	14	13	7
South	9	12	11	8	12	9	15	5	2	9	19	14
East	13	7	13	11	8	15	14	18	12	12	11	14
West	24	16	12	10	12	19	9	12	11	11	14	14
Central	9	6	8	14	14	8	10	11	9	5	10	6

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 28 Jun 2015

Time	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm
3-hr PSI	35	30	28	31	31	34	29	35	32	37	34	40
Time	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm	12am
3-hr PSI	47	51	51	46	47	49	50	49	42	40	44	48

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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