Pollutant and AQHI Distribution

(At 2014-07-24 03:00)


General Stations
Pollutant Concentrations(μg/m3)
Station Names NO2 O3 SO2 CO PM10 PM2.5 AQHI
Central/Western 4.5 70.4 1.8 - 27.9 16 3
Eastern 27.1 56.1 2.4 - 28.3 23.7 4
Kwun Tong 25.9 56.4 3.4 - 29.9 29.3 4
Sham Shui Po 23.7 51.9 7.4 - 30.8 25 3
Kwai Chung 61.5 19.1 28.9 - 38 25.2 4
Tsuen Wan 23.1 56.9 10.1 343.4 31.5 21.3 3
Yuen Long 38.5 36.2 2.9 266.7 37.6 24.9 3
Tuen Mun 13.9 60.4 11 239.9 28.1 18 3
Tung Chung 4.2 73.5 6 407.7 28.4 19 3
Tai Po 19.2 73.2 3.8 - 39.2 29.7 4
Sha Tin 27.9 61.1 8 - 26 14.5 4
Tap Mun 5.2 80.5 7.6 542.4 27.7 21.9 4

Roadside Stations
Pollutant Concentrations(μg/m3)
Station Names NO2 O3 SO2 CO PM10 PM2.5 AQHI
Causeway Bay 42.3 32.3 1.6 428.7 24.1 11.2 3
Central 17.6 62.1 - 340 25.8 14.1 3
Mong Kok 26.1 43.5 2.7 823.7 31 18.4 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:03:06 24-07-2014