Readings on 12 Aug 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)	30(30)	46(-)	8(3)	0.5(5)	19(59)
South	25(16)	25(25)	33(-)	18(8)	0.5(5)	16(56)
East	15(9)	25(25)	23(-)	3(1)	0.4(4)	18(58)
West	22(14)	27(27)	57(-)	4(2)	0.5(5)	18(58)
Central	13(8)	25(25)	37(-)	9(4)	0.7(7)	16(55)

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

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

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 Aug 2015

Time	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm
3-hr PSI	64	61	58	54	49	44	43	45	44	46	52	53
Time	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm	12am
3-hr PSI	58	62	64	62	59	61	62	64	62	59	-	-

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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