Home   Haze Updates   Pollutant Concentrations

Pollutant Concentrations

Readings on 02 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 4(3) 32(32) 32(-) 21(9) 0.4(4) 17(57)
South 19(12) 23(23) 6(-) 19(8) 0.3(3) 13(52)
East 12(8) 21(21) 17(-) 32(13) 0.4(4) 14(53)
West 30(18) 32(32) 63(-) 24(10) 0.5(5) 19(58)
Central 12(8) 24(24) 37(-) 28(12) 0.4(4) 14(53)

1-hr PM2.5 (µg/m3)b Readings on 01 Jun 2015

View reading for:

Time 1am 2am 3am 4am 5am 6am 7am 8am 9am 10am 11am 12pm
North 18 18 19 21 24 26 33 26 26 27 25 10
South 15 15 20 21 19 21 17 17 8 6 2 1
East 19 27 34 27 22 28 18 19 12 9 5 5
West 13 12 14 17 10 20 20 17 22 30 35 30
Central 13 22 18 21 21 23 20 19 23 5 9 9
Time 1pm 2pm 3pm 4pm 5pm 6pm 7pm 8pm 9pm 10pm 11pm 12am
North 11 17 6 6 12 15 12 13 13 9 12 14
South 2 5 20 17 11 16 18 10 9 11 13 9
East 9 8 15 11 9 14 5 10 7 7 10 8
West 25 13 14 20 19 17 16 10 14 11 19 28
Central 5 10 10 17 14 13 8 9 8 9 7 11

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 01 Jun 2015

Time 1am 2am 3am 4am 5am 6am 7am 8am 9am 10am 11am 12pm
3-hr PSI 52 55 58 61 61 62 62 62 60 57 56 53
Time 1pm 2pm 3pm 4pm 5pm 6pm 7pm 8pm 9pm 10pm 11pm 12am
3-hr PSI 51 45 48 51 53 53 52 52 45 42 44 49



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.

Back to Top