Welcome to Environmental Protection Department Air Quality Health Index Website


Kwai Chung
Date TimeNO2O3SO2COPM10PM2.5
2023-05-28 17:0024.899.56.2-24.614.6
2023-05-28 16:0026.689.95.9-22.312.7
2023-05-28 15:0028.885.75.7-19.510.5
2023-05-28 14:0025.477.75.4-16.98.9
2023-05-28 13:0024.569.65.0-18.710.5
2023-05-28 12:0016.870.24.6-18.17.4
2023-05-28 11:0023.465.14.5-17.28.0
2023-05-28 10:0025.559.14.7-18.99.2
2023-05-28 09:0015.562.14.6-18.48.7
2023-05-28 08:0025.349.24.9-14.85.5
2023-05-28 07:0012.655.04.9-15.06.4
2023-05-28 06:008.461.15.0-16.99.0
2023-05-28 05:0011.254.94.9-14.78.7
2023-05-28 04:007.956.04.9-14.07.6
2023-05-28 03:0010.755.24.9-13.97.3
2023-05-28 02:0012.455.34.9-15.17.9
2023-05-28 01:0016.255.04.7-19.811.0
2023-05-28 00:0019.550.04.3-21.811.3
2023-05-27 23:0023.046.44.6-20.210.8
2023-05-27 22:0020.756.34.7-19.711.0
2023-05-27 21:0029.757.55.0-21.513.1
2023-05-27 20:0029.254.14.9-20.112.9
2023-05-27 19:0034.446.45.1-19.111.6
2023-05-27 18:0038.145.85.1-21.612.4
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: 17:07 28-05-2023