Welcome to Environmental Protection Department Air Quality Health Index Website


Kwai Chung
Date TimeNO2O3SO2COPM10PM2.5
2024-04-30 02:0034.38.99.5-14.18.1
2024-04-30 01:0043.15.510.9-14.27.9
2024-04-30 00:0045.96.512.3-16.39.9
2024-04-29 23:0054.61.217.6-19.713.0
2024-04-29 22:0056.31.514.6-17.310.8
2024-04-29 21:0059.11.416.5-16.510.1
2024-04-29 20:0063.32.59.0-16.29.3
2024-04-29 19:0064.52.48.5-14.57.5
2024-04-29 18:0062.85.55.7-16.49.4
2024-04-29 17:0059.410.45.1-19.813.6
2024-04-29 16:0057.912.14.7-17.810.4
2024-04-29 15:0055.714.74.6-17.89.6
2024-04-29 14:0053.915.94.5-17.810.4
2024-04-29 13:0052.716.14.3-17.910.1
2024-04-29 12:0057.212.24.2-19.111.8
2024-04-29 11:0057.211.93.4-21.913.1
2024-04-29 10:0055.711.42.7-18.39.7
2024-04-29 09:0044.317.32.2-15.97.4
2024-04-29 08:0040.622.11.5-15.87.7
2024-04-29 07:0032.030.61.4-17.07.8
2024-04-29 06:0012.748.50.7-14.86.2
2024-04-29 05:0015.347.81.0-14.06.4
2024-04-29 04:00----12.55.5
2024-04-29 03:007.758.10.8-11.73.4
Remarks:

(1) Time shown is in Hong Kong time.

(2) Concentration shown is in microgram per cubic metre (µg/m3).

(3) Abbreviation:
NO2 - nitrogen dioxide, O3 - ozone,
SO2 - sulphur dioxide, CO - carbon monoxide,
PM10 - respirable suspended particulates,
PM2.5 - fine suspended particulates

(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: 02:07 30-04-2024