Pollutant and AQHI Distribution

(At 2015-03-31 06:00)


General Stations
Pollutant Concentrations(μg/m3)
Station Names NO2 O3 SO2 CO PM10 PM2.5 AQHI
Central/Western 34.2 30.8 9.2 - 41.2 34 3
Eastern 41.6 29.1 3.2 - 27.4 - 3
Kwun Tong 22.7 49.7 5.5 - - - 3
Sham Shui Po 39.8 28.7 7.4 - 25.2 23.5 3
Kwai Chung 26 42 9.1 - 21.8 19.2 3
Tsuen Wan 50.8 16.4 8.4 772.4 22 14 3
Yuen Long 35.6 11.2 4.6 433.3 - - 2
Tuen Mun 56.3 8.2 17.6 565.5 30 28 3
Tung Chung 36.6 18.5 7.2 396.8 28.9 15.9 2
Tai Po 20 50.5 3.1 - 24.8 18.1 3
Sha Tin 31.4 34 6.3 - 22.6 18.3 3
Tap Mun 6.1 65.5 5.7 578.4 21.2 17.9 3

Roadside Stations
Pollutant Concentrations(μg/m3)
Station Names NO2 O3 SO2 CO PM10 PM2.5 AQHI
Causeway Bay 65.3 12.4 1.5 1133.7 38.5 30.3 3
Central 62 16.8 5 432.1 35.4 28.2 3
Mong Kok 52.4 21.8 2.3 618.7 39.3 32.3 3


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:06:06 31-03-2015