Readings on 13 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	6(4)	23(23)	32(-)	31(13)	0.5(5)	13(52)
South	11(7)	24(24)	39(-)	24(10)	0.4(4)	11(46)
East	9(6)	20(20)	13(-)	31(13)	0.6(6)	12(51)
West	52(33)	32(32)	28(-)	36(15)	0.8(8)	19(59)
Central	8(5)	23(23)	32(-)	29(12)	0.3(3)	11(47)

1-hr PM_2.5 (µg/m³)^b Readings on 12 Jul 2015

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Time	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm
North	21	10	8	10	7	11	12	12	5	12	5	2
South	14	16	7	10	11	9	10	11	13	11	6	16
East	10	8	11	12	9	13	12	15	12	11	12	13
West	22	26	25	17	17	11	19	18	17	22	21	22
Central	10	13	10	9	9	14	8	11	6	8	14	12
Time	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm	12am
North	5	17	20	20	17	16	14	22	16	15	14	9
South	5	8	8	13	28	8	5	9	16	16	6	12
East	16	16	11	14	15	8	15	14	13	14	11	11
West	18	14	23	24	26	21	17	21	13	11	13	15
Central	11	13	16	18	20	9	10	11	12	15	10	8

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 12 Jul 2015

Time	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm
3-hr PSI	55	54	53	52	48	47	48	51	50	51	49	51
Time	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm	12am
3-hr PSI	49	51	52	55	58	57	54	52	53	54	52	51

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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