Welcome to Environmental Protection Department Air Quality Health Index Website


Kwai Chung
Date TimeNO2O3SO2COPM10PM2.5
2023-10-03 15:0071.696.28.1-40.219.1
2023-10-03 14:0087.078.69.5-39.719.8
2023-10-03 13:0095.463.59.2-39.020.1
2023-10-03 12:00106.333.411.1-36.620.8
2023-10-03 11:00117.019.412.3-33.419.8
2023-10-03 10:00117.714.811.5-31.215.6
2023-10-03 09:0066.054.77.2-27.413.8
2023-10-03 08:0057.056.66.5-25.112.4
2023-10-03 07:0028.375.16.1-27.413.0
2023-10-03 06:0013.388.15.9-27.714.6
2023-10-03 05:007.799.06.0-29.012.8
2023-10-03 04:006.6104.25.8-31.214.4
2023-10-03 03:007.9108.86.0-30.715.2
2023-10-03 02:008.8108.25.8-28.914.0
2023-10-03 01:0016.9104.55.8-27.213.1
2023-10-03 00:0016.7108.35.8-27.314.7
2023-10-02 23:0024.1106.85.7-24.212.8
2023-10-02 22:0025.6107.15.7-23.913.5
2023-10-02 21:0022.0106.45.8-21.412.2
2023-10-02 20:0017.7105.35.7-21.012.4
2023-10-02 19:0030.294.75.9-21.710.9
2023-10-02 18:0021.9103.95.6-22.911.5
2023-10-02 17:0024.5103.75.8-23.112.3
2023-10-02 16:0024.6102.65.8-24.012.2
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: 15:07 03-10-2023