Pollutant and AQHI Distribution

(At 2014-09-30 19:00)


General Stations
Pollutant Concentrations(μg/m3)
Station Names NO2 O3 SO2 CO PM10 PM2.5 AQHI
Central/Western 142.5 104.8 31.4 - 95.6 72.1 9
Eastern 98.9 126.9 20 - 76.2 56.5 8
Kwun Tong 199 84.9 27.2 - 100.6 68.9 9
Sham Shui Po 172.2 79.2 28.7 - 102.7 77.7 10
Kwai Chung 234.5 77.3 43.6 - 106.6 81.6 10+
Tsuen Wan 119.4 171 29.5 1160.2 103.5 82.5 10+
Yuen Long 106.1 153.3 12.5 900.4 99.9 71.2 10
Tuen Mun 201.5 88 28.6 1226.6 136.5 104.3 10+
Tung Chung 81.6 209.7 22.6 881 88.3 66.4 10+
Tai Po 89.8 174.5 11.7 - 108.6 81.9 9
Sha Tin 105.3 183.1 33.4 - 100.6 75.5 10+
Tap Mun 10.4 173.5 4.7 486.9 57.7 34 7

Roadside Stations
Pollutant Concentrations(μg/m3)
Station Names NO2 O3 SO2 CO PM10 PM2.5 AQHI
Causeway Bay 84 90.1 14.5 978.5 125.3 97.5 8
Central 141.1 93.4 23.9 1220.7 96.4 79.3 9
Mong Kok 166.5 79.8 19.4 900.7 101.6 75 10


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:19:06 30-09-2014