Readings on 02 Jul 2015

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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)	33(33)	53(-)	23(10)	0.7(7)	20(60)
South	26(16)	33(33)	15(-)	15(6)	0.5(5)	20(60)
East	15(9)	29(29)	16(-)	27(11)	0.5(5)	21(61)
West	26(16)	34(34)	18(-)	30(13)	0.6(6)	21(61)
Central	12(8)	31(31)	59(-)	17(7)	0.8(8)	18(58)

1-hr PM_2.5 (µg/m³)^b Readings on 01 Jul 2015

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Time	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm
North	15	17	16	12	24	18	15	10	18	17	21	24
South	20	16	18	15	15	15	14	16	11	18	22	16
East	15	15	21	19	19	13	14	20	17	18	18	28
West	13	13	15	16	20	19	9	27	20	26	24	17
Central	10	16	11	14	13	18	12	20	18	12	17	22
Time	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm	12am
North	10	17	22	22	21	22	25	26	25	29	28	24
South	5	19	24	26	22	24	30	32	25	25	32	28
East	16	14	26	28	22	21	36	28	25	25	23	26
West	8	20	23	18	22	19	22	22	29	26	31	34
Central	9	17	21	18	19	15	19	36	25	27	22	24

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 01 Jul 2015

Time	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm
3-hr PSI	54	54	55	55	56	56	55	55	55	57	58	60
Time	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm	12am
3-hr PSI	57	56	56	61	63	61	63	66	68	68	67	68

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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