Pollutant and AQHI Distribution

(At 2015-05-25 06:00)


General Stations
Pollutant Concentrations(μg/m3)
Station Names NO2 O3 SO2 CO PM10 PM2.5 AQHI
Central/Western 42.9 18.7 18.3 27.9 17.7 3
Eastern 52.5 3.8 7 24.1 15.5 2
Kwun Tong 69.3 4.1 14.4 35.4 15.6 3
Sham Shui Po 82.7 5.4 35.1 37.6 - 4
Kwai Chung 54.3 7.3 6.4 28.5 17.5 2
Tsuen Wan 40.3 4.3 11.2 811.5 32.2 15.8 2
Yuen Long 37.2 1 5.6 813.9 25.4 19.2 2
Tuen Mun 40.3 5.2 7.9 1270.3 27 10 2
Tung Chung 31 5 4.5 562.3 22.6 10 2
Tai Po 33.6 2.3 1.2 34.5 13.9 2
Sha Tin 50.8 1.1 5.5 24.7 11.8 2
Tap Mun 12 13.6 6.5 603.1 26.5 15.4 2

Roadside Stations
Pollutant Concentrations(μg/m3)
Station Names NO2 O3 SO2 CO PM10 PM2.5 AQHI
Causeway Bay 68.4 - 16.3 950.2 44.9 26.7 3
Central 85.8 1 11 891.8 30.9 20 3
Mong Kok 67.9 4.2 18.3 1239.7 39 27.7 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:06:08 25-05-2015