Readings on 10 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	13(8)	42(42)	55(-)	33(14)	0.7(7)	29(70)
South	19(12)	42(42)	110(-)	22(9)	0.6(6)	29(70)
East	13(8)	33(33)	30(-)	31(13)	0.7(7)	25(66)
West	31(19)	46(46)	31(-)	36(15)	0.7(7)	32(73)
Central	18(11)	37(37)	58(-)	31(13)	0.4(4)	26(67)

1-hr PM_2.5 (µg/m³)^b Readings on 10 Jul 2015

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Time	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm
North	28	32	30	22	25	22	18	13	11	15	24	53
South	30	31	33	22	23	22	8	9	10	29	44	71
East	30	32	22	22	21	24	20	16	8	12	24	45
West	43	41	40	30	34	27	21	6	18	32	54	64
Central	32	30	30	26	23	17	15	15	13	17	35	55
Time	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm	12am
North	43	46	46	41	35	34	35	32	31	20	16	-
South	66	54	41	28	16	20	23	31	33	11	12	-
East	47	31	25	25	29	29	28	30	20	18	17	-
West	49	36	32	24	32	26	22	34	27	20	21	-
Central	39	32	33	25	33	28	28	29	23	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 10 Jul 2015

Time	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm
3-hr PSI	72	74	74	71	68	64	61	56	52	54	63	80
Time	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm	12am
3-hr PSI	91	92	84	76	72	69	69	70	70	66	60	-

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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