Welcome to Environmental Protection Department Air Quality Health Index Website


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Date TimeNO2O3SO2COPM10PM2.5
2023-06-08 15:001.660.04.5377.24.01.1
2023-06-08 14:001.456.84.9396.15.52.4
2023-06-08 13:002.753.45.1391.25.82.6
2023-06-08 12:001.150.04.8367.94.51.9
2023-06-08 11:000.849.14.1381.26.52.4
2023-06-08 10:001.951.44.3397.67.12.8
2023-06-08 09:005.643.64.5394.65.41.9
2023-06-08 08:005.339.64.7386.96.52.1
2023-06-08 07:003.939.24.2394.47.12.4
2023-06-08 06:002.542.64.5381.08.93.6
2023-06-08 05:005.044.54.5394.28.84.1
2023-06-08 04:003.546.64.7418.16.91.9
2023-06-08 03:001.850.74.8398.99.02.9
2023-06-08 02:004.644.86.1399.99.73.3
2023-06-08 01:00----6.71.6
2023-06-08 00:004.943.84.0391.98.51.0
2023-06-07 23:005.524.44.6446.015.53.9
2023-06-07 22:006.717.94.2429.911.34.5
2023-06-07 21:003.727.24.2426.58.72.0
2023-06-07 20:002.526.74.1421.67.11.1
2023-06-07 19:001.531.84.2429.56.71.6
2023-06-07 18:001.732.44.3455.39.04.4
2023-06-07 17:001.948.04.4441.210.43.2
2023-06-07 16:001.852.54.9423.811.66.0
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: 15:07 08-06-2023