Welcome to Environmental Protection Department Air Quality Health Index Website


Central/Western
Date TimeNO2O3SO2COPM10PM2.5
2022-06-28 04:005.149.63.1-2.9-
2022-06-28 03:009.144.54.1-2.8-
2022-06-28 02:00-26.7--3.1-
2022-06-28 01:007.439.53.0-3.02.9
2022-06-28 00:0012.141.83.5-3.83.6
2022-06-27 23:0022.527.44.3-5.55.0
2022-06-27 22:0022.324.13.6-4.84.7
2022-06-27 21:0035.314.34.6-6.45.5
2022-06-27 20:0027.120.23.8-3.93.3
2022-06-27 19:0021.929.03.6-6.05.1
2022-06-27 18:0018.634.53.4-5.74.3
2022-06-27 17:0020.035.24.2-5.54.4
2022-06-27 16:0015.437.94.0-5.14.0
2022-06-27 15:0013.446.63.3-7.34.7
2022-06-27 14:0024.240.24.0-5.24.0
2022-06-27 13:0020.841.74.1-3.42.0
2022-06-27 12:0024.534.16.5-3.01.5
2022-06-27 11:0011.340.83.1-4.83.4
2022-06-27 10:0012.638.53.6-6.04.2
2022-06-27 09:0018.729.73.5-5.44.2
2022-06-27 08:0021.223.53.4-2.92.1
2022-06-27 07:008.533.23.1-1.81.4
2022-06-27 06:0014.228.33.9-2.82.4
2022-06-27 05:0013.028.83.9-2.42.2
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: 04:07 28-06-2022