Welcome to Environmental Protection Department Air Quality Health Index Website


Kwai Chung
Date TimeNO2O3SO2COPM10PM2.5
2024-03-19 16:0060.493.53.6-21.812.7
2024-03-19 15:0056.489.33.8-20.511.8
2024-03-19 14:0064.364.94.1-20.012.6
2024-03-19 13:0049.856.83.4-11.97.4
2024-03-19 12:0038.437.52.9-7.94.7
2024-03-19 11:0043.825.13.3-10.06.7
2024-03-19 10:0041.322.13.6-6.73.9
2024-03-19 09:0041.018.23.5-7.04.2
2024-03-19 08:0040.323.03.5-10.27.7
2024-03-19 07:0028.952.53.0-20.013.5
2024-03-19 06:0017.270.33.5-28.918.5
2024-03-19 05:0012.777.73.7-36.020.5
2024-03-19 04:0012.979.63.5-39.418.7
2024-03-19 03:0014.779.93.8-34.718.5
2024-03-19 02:0017.879.33.7-32.817.9
2024-03-19 01:0020.276.13.7-32.519.1
2024-03-19 00:0031.769.63.7-31.418.8
2024-03-18 23:0027.277.73.6-25.816.6
2024-03-18 22:0033.078.23.4-25.818.2
2024-03-18 21:0055.159.34.1-32.623.6
2024-03-18 20:0070.252.84.4-30.121.1
2024-03-18 19:0059.663.54.1-26.716.4
2024-03-18 18:0053.769.74.0-27.315.4
2024-03-18 17:0050.470.83.7-27.415.7
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: 16:07 19-03-2024