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Pollutant and AQHI Distribution

(At 2023-06-08 22:00)

General Stations
Pollutant Concentrations(μg/m3)
Station NamesNO2O3SO2COPM10PM2.5AQHI
Kwun Tong39.695.47.63.72
Sham Shui Po30.523.23.6106.12
Kwai Chung31.922.
Tsuen Wan34.311.73.1780.79.452
Tseung Kwan O1138.84103.47.8-2
Yuen Long39.394.4543.24.53.32
Tuen Mun39.29.31.35073.22.12
Tung Chung23.16.53.5423.47.51.81
Tai Po24.612.41.611.27.22
Sha Tin31.
Tap Mun540.84.1375.93.80.82

Roadside Stations
Pollutant Concentrations(μg/m3)
Station NamesNO2O3SO2COPM10PM2.5AQHI
Causeway Bay60.211.84656.722.714.13
Mong Kok53.813.13.8590.416.711.63


(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.