Welcome to Environmental Protection Department Air Quality Health Index Website


Central
Date TimeNO2O3SO2COPM10PM2.5
2021-06-21 06:0032.847.02.8337.019.811.1
2021-06-21 05:0039.739.02.9379.522.613.5
2021-06-21 04:0027.444.62.7349.123.212.5
2021-06-21 03:00-44.2--22.713.3
2021-06-21 02:0034.133.82.9380.822.113.5
2021-06-21 01:0023.342.92.7297.723.313.7
2021-06-21 00:0024.644.42.8280.824.515.3
2021-06-20 23:0023.848.12.7301.324.314.0
2021-06-20 22:0021.850.52.6324.223.714.0
2021-06-20 21:0028.340.92.7371.523.615.0
2021-06-20 20:0048.923.73.1510.823.514.8
2021-06-20 19:0043.131.63.0470.321.011.3
2021-06-20 18:0058.814.83.9578.921.611.6
2021-06-20 17:0046.836.43.2359.321.312.2
2021-06-20 16:0038.545.43.0345.023.914.7
2021-06-20 15:0040.545.63.1377.424.414.6
2021-06-20 14:0033.351.82.9335.525.115.3
2021-06-20 13:0039.443.33.4416.222.812.6
2021-06-20 12:0047.733.43.7411.823.212.5
2021-06-20 11:0063.526.33.9469.524.713.6
2021-06-20 10:0062.324.34.0447.626.716.1
2021-06-20 09:0048.530.13.4418.620.411.3
2021-06-20 08:0034.339.23.3359.919.310.8
2021-06-20 07:0026.344.03.0328.521.313.0
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: 06:07 21-06-2021