Welcome to Environmental Protection Department Air Quality Health Index Website


(At 2024-03-19 14:00)


General Stations
Pollutant Concentrations(μg/m3)
Station NamesNO2O3SO2COPM10PM2.5AQHI
Central/Western30.588.42.414.67.43
Southern43.7-2.8952.51.4-3*
Eastern34.188.11.114.98.43
Kwun Tong60.661.44.3-5.13
Sham Shui Po37.884.92.1136.33
Kwai Chung64.364.94.12012.63
Tsuen Wan51.974.72.41033.113.89.13
Tseung Kwan O16.5110.91.6561.5118.84
Yuen Long48.81012.2958.121.513.64
Tuen Mun43.4114.33.6908.931.917.24
Tung Chung54.881.36.8812.933.226.64
Tai Po19.898.32.217.79.83
Sha Tin15.8114.61.411.46.33
North25.6104.11.6622.218.79.64
Tap Mun6102.81.1534.812.65.33

Roadside Stations
Pollutant Concentrations(μg/m3)
Station NamesNO2O3SO2COPM10PM2.5AQHI
Causeway Bay105.619.56.71177.338.525.54
Central9025.32754.920.912.63
Mong Kok77.452.82.8731.716.110.23


Remarks:

(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.


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Last revision date: 14:07 19-03-2024