Welcome to Environmental Protection Department Air Quality Health Index Website


Eastern
Date TimeNO2O3SO2COPM10PM2.5
2024-04-29 17:0029.445.00.7-17.810.8
2024-04-29 16:0033.646.60.8-16.38.5
2024-04-29 15:0036.145.30.8-21.012.2
2024-04-29 14:0038.342.20.8-23.711.8
2024-04-29 13:00----32.015.0
2024-04-29 12:00----32.514.5
2024-04-29 11:00----28.713.1
2024-04-29 10:0045.135.60.6-25.411.5
2024-04-29 09:0052.329.40.6-23.19.5
2024-04-29 08:0044.037.70.5-15.35.5
2024-04-29 07:0036.648.10.5-14.76.2
2024-04-29 06:0020.767.10.8-17.47.9
2024-04-29 05:0013.474.90.9-15.05.5
2024-04-29 04:0013.176.60.8-20.07.1
2024-04-29 03:0015.375.80.7-19.88.5
2024-04-29 02:0019.974.30.7-14.35.3
2024-04-29 01:0028.172.51.0-13.65.1
2024-04-29 00:0031.375.20.7-10.33.5
2024-04-28 23:0029.280.00.8-12.04.5
2024-04-28 22:0031.272.91.0-15.87.2
2024-04-28 21:0035.474.30.7-11.05.2
2024-04-28 20:0043.374.40.8-13.57.9
2024-04-28 19:0035.086.60.9-9.74.9
2024-04-28 18:0036.589.60.5-8.65.1
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: 17:09 29-04-2024