Welcome to Environmental Protection Department Air Quality Health Index Website


North
Date TimeNO2O3SO2COPM10PM2.5
2023-02-08 05:009.375.40.9622.212.09.0
2023-02-08 04:008.275.01.2591.811.010.4
2023-02-08 03:007.782.91.1579.011.510.3
2023-02-08 02:009.983.01.3611.816.411.6
2023-02-08 01:0011.979.61.4621.020.710.9
2023-02-08 00:0015.774.41.5612.621.410.5
2023-02-07 23:0019.775.21.7616.718.913.5
2023-02-07 22:0025.963.12.3634.28.4-
2023-02-07 21:0048.132.62.8648.69.1-
2023-02-07 20:0066.722.53.01,257.114.411.9
2023-02-07 19:0067.919.72.61,172.814.19.6
2023-02-07 18:0044.338.82.2567.517.310.2
2023-02-07 17:0039.444.62.3533.622.815.4
2023-02-07 16:0045.046.22.5603.223.116.4
2023-02-07 15:0040.443.42.6572.514.813.5
2023-02-07 14:0036.638.72.5570.012.5-
2023-02-07 13:0038.231.92.8627.115.214.8
2023-02-07 12:0039.926.02.7602.212.5-
2023-02-07 11:0051.117.02.7614.312.2-
2023-02-07 10:0055.011.43.2749.316.212.3
2023-02-07 09:0061.56.83.5885.010.8-
2023-02-07 08:0056.56.03.3840.211.911.5
2023-02-07 07:0046.615.42.2759.415.611.0
2023-02-07 06:0024.632.01.8597.68.6-
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: 05:07 08-02-2023