Readings on 15 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	7(4)	18(18)	41(-)	24(10)	0.4(4)	10(44)
South	12(8)	17(17)	59(-)	23(10)	0.4(4)	9(39)
East	13(8)	14(14)	15(-)	25(11)	0.5(5)	9(36)
West	36(23)	18(18)	30(-)	27(12)	0.3(3)	10(41)
Central	6(4)	16(16)	29(-)	26(11)	0.6(6)	7(30)

1-hr PM_2.5 (µg/m³)^b Readings on 14 Jul 2015

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

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 14 Jul 2015

Time	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm
3-hr PSI	49	46	45	39	31	24	23	23	26	30	37	40
Time	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm	12am
3-hr PSI	45	45	40	36	41	48	50	52	49	51	35	30

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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