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Pollutant and AQHI Distribution

(At 2022-10-03 05:00)

General Stations
Pollutant Concentrations(μg/m3)
Station NamesNO2O3SO2COPM10PM2.5AQHI
Kwun Tong8.445.54.1119.52
Sham Shui Po11.4450.9105.52
Kwai Chung4.130.20.913.58.92
Tsuen Wan10.533.58.4325.57.64.62
Tseung Kwan O-432.5105.712.79.62
Yuen Long15.912.92.5602.514.510.62
Tuen Mun8.632.33.1385.914.192
Tung Chung8.831.64.4429.710.15.92
Tai Po10.433.40.613.98.72
Sha Tin6.147.14.310.96.42
Tap Mun2.7507.8614.314.682

Roadside Stations
Pollutant Concentrations(μg/m3)
Station NamesNO2O3SO2COPM10PM2.5AQHI
Causeway Bay19.9342293.9138.82
Mong Kok19.442.31514.611.98.62


(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.