Readings on 12 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	12(8)	29(29)	46(-)	30(13)	0.5(5)	18(58)
South	15(10)	27(27)	89(-)	24(10)	0.5(5)	15(54)
East	12(7)	22(22)	14(-)	28(12)	0.6(6)	15(54)
West	25(16)	31(31)	29(-)	22(9)	0.6(6)	19(59)
Central	10(6)	24(24)	43(-)	32(14)	0.2(2)	14(53)

1-hr PM_2.5 (µg/m³)^b Readings on 11 Jul 2015

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

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 11 Jul 2015

Time	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm
3-hr PSI	57	56	54	44	40	43	51	53	54	56	56	57
Time	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm	12am
3-hr PSI	57	58	58	58	59	61	63	61	59	57	62	54

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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