Welcome to Environmental Protection Department Air Quality Health Index Website


Kwai Chung
Date TimeNO2O3SO2COPM10PM2.5
2022-05-26 09:0043.421.05.6-8.36.0
2022-05-26 08:0035.124.05.6-7.76.0
2022-05-26 07:0033.723.25.6-7.05.8
2022-05-26 06:0020.930.05.3-8.46.3
2022-05-26 05:00----7.25.0
2022-05-26 04:00----6.03.9
2022-05-26 03:0018.936.24.8-8.36.4
2022-05-26 02:0020.834.64.8-9.47.4
2022-05-26 01:0029.833.05.0-6.84.5
2022-05-26 00:0028.435.84.9-7.56.4
2022-05-25 23:0031.134.85.0-6.7-
2022-05-25 22:0029.044.74.8-5.6-
2022-05-25 21:0032.549.05.1-7.57.2
2022-05-25 20:0036.248.95.2-9.38.2
2022-05-25 19:0047.441.75.4-12.59.9
2022-05-25 18:0053.140.75.4-14.210.0
2022-05-25 17:0057.536.65.8-15.59.3
2022-05-25 16:0063.238.410.0-26.916.3
2022-05-25 15:00100.58.314.4-29.119.2
2022-05-25 14:0073.525.88.4-20.914.9
2022-05-25 13:0071.821.37.3-15.611.5
2022-05-25 12:0047.630.55.1-10.58.1
2022-05-25 11:0048.430.05.4-8.36.1
2022-05-25 10:0048.425.35.5-5.34.8
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.

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Last revision date: 09:07 26-05-2022