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Pollutant and AQHI Distribution

(At 2023-02-07 05:00)

General Stations
Pollutant Concentrations(μg/m3)
Station NamesNO2O3SO2COPM10PM2.5AQHI
Kwun Tong9.949.93.419.913.42
Sham Shui Po1951.13.613.111.53
Kwai Chung1338.
Tsuen Wan31.823.59.2468.512.97.52
Tseung Kwan O13.552.212629.472
Yuen Long22.928.63.6639.513.110.72
Tuen Mun643.33.8582.924.5123
Tung Chung21.216.612.1274.73.7-2
Tai Po2244.
Sha Tin32.923.114.614.610.22
Tap Mun3.7285.5443.513.310.82

Roadside Stations
Pollutant Concentrations(μg/m3)
Station NamesNO2O3SO2COPM10PM2.5AQHI
Causeway Bay41.526.23.2592.813.611.23
Mong Kok32.447.81.8562.914.511.73


(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.