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Pollutant and AQHI Distribution

(At 2022-07-02 08:00)

General Stations
Pollutant Concentrations(μg/m3)
Station NamesNO2O3SO2COPM10PM2.5AQHI
Kwun Tong10.654.3719.25.93
Sham Shui Po7.363.15.913.43.93
Kwai Chung2.665.
Tsuen Wan4.465.27.1287.210.82.83
Tseung Kwan O2.163.80346.221.38.93
Yuen Long5.464.32.7368.49.15.82
Tuen Mun3.462.51.6343.511.362
Tung Chung3.658.43.5482.610.83.12
Tai Po2.566.13.511.53.43
Sha Tin4.9657.814.34.73
Tap Mun070.47.6433.519.143

Roadside Stations
Pollutant Concentrations(μg/m3)
Station NamesNO2O3SO2COPM10PM2.5AQHI
Causeway Bay5.558.62.1278.7154.23
Mong Kok10.540.91.5477.212.732


(1) Time shown is in Hong Kong time.

(2) NO2 - nitrogen dioxide, O3 - ozone,
     SO2 - sulphur dioxide, CO - carbon monoxide,
     PM10 - respirable suspended particulates,
     PM2.5 - fine suspended particulates

(3) Concentration shown is in µg/m3.

(4) The Pollutant concentration and AQHI information are based on real time data taken directly from EPD's Air Quality Monitoring Network.

(5) In case of equipment or station suspension due to repair and maintenance, the data collection for calculation of AQHI at station will be affected, the data of similar stations will then be adopted. Such AQHI will be shown with an asterisk.