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Pollutant Concentrations

Readings on 25 Jul 2016

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 13(8) 22(22) 16(-) 15(6) 0.6(6) 11(47)
South 23(14) 19(19) 28(-) 6(3) 0.4(4) 9(36)
East 11(7) 17(17) 17(-) 10(4) 0.4(4) 9(39)
West 25(15) 18(18) 22(-) 5(2) 0.3(3) 9(39)
Central 10(7) 16(16) 34(-) 5(2) 0.4(4) 9(36)

Note: The numbers in brackets refer to PSI sub-indices.

24-hr Sulphur Dioxide (µg/m3) Readings on 25 Jul 2016

View reading for:

Time 1am 2am 3am 4am 5am 6am 7am 8am 9am 10am 11am 12pm
North 12(7) 12(8) 13(8) 13(8) 13(8) 13(8) 13(8) 13(8) 13(8) 13(8) - -
South 18(11) 19(12) 20(13) 21(13) 21(13) 21(13) 21(13) 22(13) 22(14) 23(14) - -
East 10(6) 10(6) 10(6) 10(6) 10(6) 10(6) 11(7) 11(7) 11(7) 11(7) - -
West 26(17) 26(16) 26(16) 25(16) 25(16) 25(15) 25(15) 25(15) 25(15) 25(15) - -
Central 8(5) 8(5) 9(5) 9(6) 9(6) 9(6) 9(6) 10(6) 10(6) 10(7) - -
Time 1pm 2pm 3pm 4pm 5pm 6pm 7pm 8pm 9pm 10pm 11pm 12am
North - - - - - - - - - - - -
South - - - - - - - - - - - -
East - - - - - - - - - - - -
West - - - - - - - - - - - -
Central - - - - - - - - - - - -

Note:
The numbers in brackets refer to PSI sub-indices.
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 PM2.5.

3-hr PSI Readings from 1am to 12am on 25 Jul 2016

Time 1am 2am 3am 4am 5am 6am 7am 8am 9am 10am 11am 12pm
3-hr PSI 34 36 39 41 39 36 30 29 29 30 - -
Time 1pm 2pm 3pm 4pm 5pm 6pm 7pm 8pm 9pm 10pm 11pm 12am
3-hr PSI - - - - - - - - - - - -



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.