Pollutant and AQHI Distribution

(At 2014-04-20 21:00)


General Stations
Pollutant Concentrations(μg/m3)
Station Names NO2 O3 SO2 CO PM10 PM2.5 AQHI
Central/Western 68.8 0.4 17.8 - 42 25 3
Eastern 77 4.4 21.9 - 43 - 3
Kwun Tong 73.8 0.4 20.9 - 54.5 33.4 3
Sham Shui Po 72.5 5.1 99.2 - 39.3 33.5 3
Kwai Chung 60.5 4.2 121.2 - 44.4 31.7 4
Tsuen Wan 60.6 6.1 45.9 764.1 - - 3
Yuen Long 59.5 8.3 18.8 679.3 33.7 19 3
Tuen Mun 61.3 8 11.8 565.4 39 22 3
Tung Chung 58.7 4.4 13.7 496.7 31.5 21.5 3
Tai Po 69 6.7 10.1 - 39.8 26.3 3
Sha Tin 70.5 3.9 60.6 - 45.2 30.4 4
Tap Mun 40.4 7.6 12.7 586.5 25.2 23 2

Roadside Stations
Pollutant Concentrations(μg/m3)
Station Names NO2 O3 SO2 CO PM10 PM2.5 AQHI
Causeway Bay 93.4 1.2 19.7 1032.8 90.8 69 5
Central 159.9 2.2 32.1 1124.9 54.2 31.4 5
Mong Kok 129.3 2.2 83.1 1042.7 64.4 50.4 4


Remark:
(1) NO2 - nitrogen dioxide, O3 - ozone, SO2 - sulphur dioxide, CO - carbon monoxide, PM10/RSP - particulate matter with an aerodynamic diameter of less than 10 μm / respirable suspended particulates, PM2.5 / FSP - particulate matter with an aerodynamic diameter of less than 2.5 μm / fine suspended particulates.
(2) Concentrations in micrograms per cubic meter (μg/m3).
(3) Pollutant concentrations and AQHI information are based on raw data taken directly from EPD's Air Quality Monitoring Network.

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Last revision date:21:06 20-04-2014