Welcome to Environmental Protection Department Air Quality Health Index Website


Central
Date TimeNO2O3SO2COPM10PM2.5
2023-09-23 10:0044.418.53.8305.220.212.8
2023-09-23 09:0042.720.83.5277.422.816.2
2023-09-23 08:0038.523.52.9297.820.012.2
2023-09-23 07:0035.339.43.2287.122.314.2
2023-09-23 06:0019.457.02.8297.618.611.9
2023-09-23 05:0022.150.83.2254.017.012.5
2023-09-23 04:0022.954.03.1258.816.312.6
2023-09-23 03:00-60.7--18.113.5
2023-09-23 02:0037.953.82.9364.822.816.5
2023-09-23 01:0046.657.23.0393.621.214.8
2023-09-23 00:0047.859.73.0400.228.320.3
2023-09-22 23:0049.461.03.2372.325.819.2
2023-09-22 22:0057.453.13.3503.227.620.5
2023-09-22 21:0060.844.53.6523.134.025.9
2023-09-22 20:0094.228.73.9659.534.626.2
2023-09-22 19:00113.419.14.1660.530.521.9
2023-09-22 18:00112.827.15.0627.028.719.2
2023-09-22 17:0078.755.23.9453.229.118.6
2023-09-22 16:0073.556.83.9414.7--
2023-09-22 15:0096.234.04.7770.2--
2023-09-22 14:00111.334.05.2534.5--
2023-09-22 13:0099.026.36.2540.9--
2023-09-22 12:0090.016.16.1643.3--
2023-09-22 11:00104.85.38.3708.9--
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 is based on real time data taken directly from EPD's Air Quality Monitoring Network.

Mobile Version | Desktop Version
Last revision date: 10:08 23-09-2023