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Pollutant Concentrations

Readings on 07 Jun 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 PM2.5
(µg/m3)
North 6(4) 33(33) 35(-) 7(3) 0.7(7) 19(59)
South 23(14) 28(28) 24(-) 5(2) 0.8(8) 17(56)
East 25(15) 22(22) 71(-) 7(3) 1.1(11) 16(55)
West 14(9) 38(38) 45(-) 10(4) 0.6(6) 23(63)
Central 11(7) 29(29) 61(-) 4(2) 1(10) 16(56)

1-hr PM2.5 (µg/m3)b Readings on 06 Jun 2015

View reading for:

Time 1am 2am 3am 4am 5am 6am 7am 8am 9am 10am 11am 12pm
North 33 13 17 17 20 23 26 21 18 14 7 18
South 12 13 9 18 13 14 18 22 16 15 9 8
East 10 9 11 15 13 16 16 16 15 24 17 21
West 26 31 39 32 31 35 29 21 17 26 38 36
Central 15 17 19 15 17 18 18 16 20 13 20 16
Time 1pm 2pm 3pm 4pm 5pm 6pm 7pm 8pm 9pm 10pm 11pm 12am
North 30 12 16 25 8 7 27 27 21 15 14 23
South 2 11 32 9 15 17 26 33 18 16 24 28
East 6 11 15 12 9 6 20 27 17 24 29 26
West 12 8 20 27 13 11 16 21 20 18 16 13
Central 12 8 24 5 8 16 17 17 19 18 23 17

Note:
a Sub-index for nitrogen dioxide is reported only when the 1-hr concentration equals or exceeds 1130 µg/m3.

b There is no sub-index for 1-hr PM2.5.

3-hr PSI Readings from 1am to 12am on 06 Jun 2015

Time 1am 2am 3am 4am 5am 6am 7am 8am 9am 10am 11am 12pm
3-hr PSI 56 57 58 58 59 60 60 61 59 58 58 59
Time 1pm 2pm 3pm 4pm 5pm 6pm 7pm 8pm 9pm 10pm 11pm 12am
3-hr PSI 56 53 54 55 55 51 54 59 62 61 59 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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