Welcome to Environmental Protection Department Air Quality Health Index Website


Kwai Chung
Date TimeNO2O3SO2COPM10PM2.5
2023-02-07 15:0079.210.314.1-29.619.6
2023-02-07 14:0083.87.917.2-35.522.3
2023-02-07 13:0091.06.324.7-43.427.3
2023-02-07 12:00100.84.929.2-42.627.3
2023-02-07 11:0094.75.019.0-35.123.0
2023-02-07 10:0076.44.513.1-26.618.5
2023-02-07 09:0065.74.87.7-21.616.3
2023-02-07 08:0063.24.67.1-13.511.6
2023-02-07 07:0039.413.24.5-11.710.3
2023-02-07 06:0019.130.34.0-10.48.9
2023-02-07 05:0013.038.53.8-9.28.8
2023-02-07 04:009.148.83.8-9.08.9
2023-02-07 03:006.255.83.4-5.8-
2023-02-07 02:0015.049.93.5-10.78.6
2023-02-07 01:0023.141.83.6-18.911.3
2023-02-07 00:0027.838.33.7-16.411.5
2023-02-06 23:0032.735.44.0-14.59.1
2023-02-06 22:0030.738.54.0-13.68.8
2023-02-06 21:0025.743.63.8-11.57.1
2023-02-06 20:0040.535.24.1-15.69.2
2023-02-06 19:0049.031.14.2-20.111.6
2023-02-06 18:0061.321.84.5-20.313.3
2023-02-06 17:0066.123.35.2-20.713.0
2023-02-06 16:0044.638.74.6-12.38.9
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 07-02-2023