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Pollutant Concentrations

Readings on 17 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 5(3) 33(33) 50(-) 13(5) 0.6(6) 20(60)
South 17(11) 30(30) 6(-) 25(10) 0.4(4) 19(59)
East 15(9) 24(24) 14(-) 38(16) 0.9(9) 17(57)
West 21(13) 33(33) 49(-) 7(3) 0.7(7) 22(62)
Central 10(6) 28(28) 38(-) 15(6) 0.3(3) 17(56)

1-hr PM2.5 (µg/m3)b Readings on 17 Jun 2015

View reading for:

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

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 7am to 7pm on 17 Jun 2015

Time 7am 8am 9am 10am 11am 12pm 1pm 2pm 3pm 4pm 5pm 6pm 7pm
3-hr PSI 58 59 60 61 - - - - - - - - -



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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