Welcome to Environmental Protection Department Air Quality Health Index Website


Central
Date TimeNO2O3SO2COPM10PM2.5
2022-08-11 09:0062.95.77.91,276.714.89.3
2022-08-11 08:0053.25.75.91,239.411.74.7
2022-08-11 07:0043.57.65.01,205.611.64.9
2022-08-11 06:0023.120.94.31,030.610.64.7
2022-08-11 05:0013.928.94.0918.76.52.2
2022-08-11 04:0015.830.14.1986.08.24.1
2022-08-11 03:00-31.5--7.93.4
2022-08-11 02:0017.530.94.0926.18.33.4
2022-08-11 01:0020.428.93.8992.18.22.6
2022-08-11 00:0023.725.74.11,021.211.26.5
2022-08-10 23:0033.022.34.11,066.310.05.1
2022-08-10 22:0025.226.94.01,050.313.38.4
2022-08-10 21:0033.322.14.51,236.121.016.4
2022-08-10 20:0061.35.96.91,593.320.913.9
2022-08-10 19:0060.85.57.01,573.917.611.8
2022-08-10 18:0060.36.67.01,502.914.58.8
2022-08-10 17:0048.514.65.11,251.516.38.1
2022-08-10 16:0047.513.85.21,297.521.311.1
2022-08-10 15:0049.414.65.21,257.225.214.4
2022-08-10 14:0040.518.34.71,231.622.113.0
2022-08-10 13:0038.717.84.81,192.420.014.4
2022-08-10 12:0032.919.74.81,133.017.910.2
2022-08-10 11:0041.615.24.91,132.515.46.7
2022-08-10 10:0043.017.45.01,059.516.88.3
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: 09:07 11-08-2022