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Pollutant Concentrations

Readings on 30 Sep 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) 46(46) 30(-) 41(17) 0.6(6) 27(68)
South 24(15) 39(39) 76(-) 33(14) 0.4(4) 20(60)
East 16(10) 36(36) 40(-) 36(15) 0.3(3) 23(63)
West 12(8) 29(29) 67(-) 48(20) 0.4(4) 16(55)
Central 6(4) 30(30) 85(-) 37(16) 0.5(5) 21(61)

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

24-hr Sulphur Dioxide (µg/m3) Readings on 30 Sep 2016

View reading for:

Time 1am 2am 3am 4am 5am 6am 7am 8am 9am 10am 11am 12pm
North 6(4) 7(4) 7(4) 7(4) 7(5) 8(5) 8(5) 9(6) 10(6) 11(7) 11(7) 11(7)
South 8(5) 8(5) 8(5) 8(5) 8(5) 7(5) 7(4) 7(5) 8(5) 9(5) 13(8) 16(10)
East 8(5) 8(5) 8(5) 8(5) 9(5) 9(5) 9(6) 10(7) 12(7) 13(8) 13(8) 14(9)
West 8(5) 8(5) 8(5) 8(5) 8(5) 8(5) 8(5) 8(5) 9(6) 9(6) 9(6) 10(6)
Central 5(3) 5(3) 4(3) 4(3) 4(2) 4(2) 4(2) 4(2) 4(3) 4(3) 5(3) 5(3)
Time 1pm 2pm 3pm 4pm 5pm 6pm 7pm 8pm 9pm 10pm 11pm 12am
North 12(7) 12(7) 12(7) 12(7) 12(7) 12(8) 12(8) 13(8) 13(8) 13(8) - -
South 17(10) 17(11) 19(12) 21(13) 23(15) 24(15) 24(15) 24(15) 24(15) 24(15) - -
East 15(9) 12(8) 13(8) 15(9) 16(10) 16(10) 16(10) 16(10) 16(10) 16(10) - -
West 10(6) 10(6) 11(7) 12(7) 12(8) 12(8) 12(8) 12(8) 12(8) 12(8) - -
Central 5(3) 5(3) 5(3) 6(4) 6(4) 6(4) 6(4) 6(4) 6(4) 6(4) - -

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 30 Sep 2016

Time 1am 2am 3am 4am 5am 6am 7am 8am 9am 10am 11am 12pm
3-hr PSI 54 58 59 58 59 59 64 67 75 79 78 71
Time 1pm 2pm 3pm 4pm 5pm 6pm 7pm 8pm 9pm 10pm 11pm 12am
3-hr PSI 60 56 54 55 60 60 58 53 58 62 - -



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.