Welcome to Environmental Protection Department Air Quality Health Index Website


Kwai Chung
Date TimeNO2O3SO2COPM10PM2.5
2021-06-21 05:0069.13.914.0-43.531.5
2021-06-21 04:0061.35.412.8-38.126.0
2021-06-21 03:0057.67.712.3-33.922.0
2021-06-21 02:0054.88.412.3-37.525.1
2021-06-21 01:0058.85.412.3-34.121.8
2021-06-21 00:0067.35.712.5-32.519.9
2021-06-20 23:0075.95.512.2-29.016.7
2021-06-20 22:0060.010.710.5-28.616.9
2021-06-20 21:0055.111.611.1-29.017.4
2021-06-20 20:0065.86.712.4-27.816.8
2021-06-20 19:0065.87.311.7-23.813.4
2021-06-20 18:0049.921.19.8-22.111.5
2021-06-20 17:0052.125.29.1-25.214.4
2021-06-20 16:0053.930.58.0-26.214.7
2021-06-20 15:0042.443.57.2-29.817.5
2021-06-20 14:0034.553.97.6-30.118.9
2021-06-20 13:0038.546.57.6-23.212.9
2021-06-20 12:0039.744.58.5-24.014.5
2021-06-20 11:0045.637.08.7-23.713.3
2021-06-20 10:0051.928.612.1-25.815.8
2021-06-20 09:0063.513.712.1-24.714.7
2021-06-20 08:0053.216.610.2-23.013.4
2021-06-20 07:0054.016.210.7-22.011.9
2021-06-20 06:0061.711.211.6-22.812.8
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: 05:07 21-06-2021