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Pollutant and AQHI Distribution

(At 2023-12-04 10:00)

General Stations
Pollutant Concentrations(μg/m3)
Station NamesNO2O3SO2COPM10PM2.5AQHI
Kwun Tong6119.93.553.338.33
Sham Shui Po44.539.12.552.834.23
Kwai Chung77.418.78.856.638.94
Tsuen Wan4139.55.5641.556.138.13
Tseung Kwan O31.937.84.1531.537.8283
Yuen Long42.4298.7824.443.830.73
Tuen Mun54.719.75.47535635.23
Tung Chung31.617.77.7690.23817.52
Tai Po34.937.73.74029.43
Sha Tin31.545448.232.13
Tap Mun10.449.93.6539.630.523.72

Roadside Stations
Pollutant Concentrations(μg/m3)
Station NamesNO2O3SO2COPM10PM2.5AQHI
Causeway Bay87.4127.1948.367.245.44
Mong Kok66.628.35.5638.855.237.73


(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.