Welcome to Environmental Protection Department Air Quality Health Index Website


Eastern
Date TimeNO2O3SO2COPM10PM2.5
2021-12-04 09:0058.258.32.7-24.610.4
2021-12-04 08:0045.661.52.8-25.610.3
2021-12-04 07:0029.078.73.0-25.012.0
2021-12-04 06:0021.083.63.4-22.09.4
2021-12-04 05:0017.388.14.0-21.89.7
2021-12-04 04:0015.791.74.0-26.013.0
2021-12-04 03:0020.482.24.2-27.812.1
2021-12-04 02:0029.773.54.1-30.210.7
2021-12-04 01:0043.162.23.8-34.410.0
2021-12-04 00:0049.659.53.5-38.412.4
2021-12-03 23:0049.361.72.7-37.610.6
2021-12-03 22:0055.258.22.9-33.012.7
2021-12-03 21:0052.663.21.8-33.413.8
2021-12-03 20:0062.559.12.2-43.216.1
2021-12-03 19:0054.769.02.0-50.915.1
2021-12-03 18:0058.872.51.9-46.012.8
2021-12-03 17:0058.476.42.1-43.512.6
2021-12-03 16:0044.386.52.1-39.09.7
2021-12-03 15:0046.489.51.9-33.18.3
2021-12-03 14:0041.289.21.7-37.110.5
2021-12-03 13:0042.386.42.1-42.911.3
2021-12-03 12:0043.281.32.3-44.511.1
2021-12-03 11:0037.581.32.5-38.910.2
2021-12-03 10:0041.374.12.5-31.010.7
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: 09:07 04-12-2021