Pollutant and AQHI Distribution

(At 2024-04-17 09:00)

General Stations
Pollutant Concentrations(μg/m3)
Station NamesNO2O3SO2COPM10PM2.5AQHI
Kwun Tong52.59.532214.72
Sham Shui Po43.917.72.315.9122
Kwai Chung57.45.410.119.113.32
Tsuen Wan39.234.58.7334.717.514.73
Tseung Kwan O27.527.41.4192.316.514.32
Yuen Long21.134.21514.315.411.42
Tuen Mun28263.5619.322.812.12
Tung Chung10.638.21.1426.813.4122
Tai Po23.3313.414.111.12
Sha Tin24.333.11.515.412.22
Tap Mun4.241.71.2255.28.97.92

Roadside Stations
Pollutant Concentrations(μg/m3)
Station NamesNO2O3SO2COPM10PM2.5AQHI
Causeway Bay49.215.84.6495.531.320.93
Mong Kok61.39.14.6416.617.113.42


(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.