(At 2021-10-26 03:00)

General Stations
Pollutant Concentrations(μg/m3)
Station NamesNO2O3SO2COPM10PM2.5AQHI
Kwun Tong1970.14.123.811.43
Sham Shui Po27.948.
Kwai Chung15.358.82.919.2133
Tsuen Wan23.149.55.4421.920.315.83
Tseung Kwan O1370.71.9447.42317.73
Yuen Long27.239.511490.532.622.33
Tuen Mun26.242.3659840.821.13
Tung Chung3218.97.2373.323183
Tai Po36.722.43.52518.32
Sha Tin26.
Tap Mun16.252.47.8820.430.518.73

Roadside Stations
Pollutant Concentrations(μg/m3)
Station NamesNO2O3SO2COPM10PM2.5AQHI
Causeway Bay39.441.22.4451.130.721.93
Mong Kok2954.21.2543.523.215.23


(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) Owing to the maintenance works, the operation of Tai Po Air Quality Monitoring Station will be temporarily suspended on 28 October 2021.  We apologize for any inconvenience caused.

Last revision date: 03:07 26-10-2021