Welcome to Environmental Protection Department Air Quality Health Index Website


Central
Date TimeNO2O3SO2COPM10PM2.5
2024-05-07 20:0070.759.02.0599.122.415.7
2024-05-07 19:0077.364.12.3495.133.120.9
2024-05-07 18:0088.652.42.6457.749.329.8
2024-05-07 17:0088.953.02.0430.254.934.6
2024-05-07 16:0095.551.62.6503.251.736.4
2024-05-07 15:00100.953.92.4519.845.030.7
2024-05-07 14:00126.961.93.9576.360.141.6
2024-05-07 13:00168.710.96.6853.748.833.1
2024-05-07 12:00156.417.06.9620.752.535.8
2024-05-07 11:00146.59.68.3673.455.939.9
2024-05-07 10:00145.16.212.6763.757.842.6
2024-05-07 09:00123.77.09.1770.451.837.8
2024-05-07 08:0097.912.96.2611.141.331.3
2024-05-07 07:00109.44.26.5632.135.327.9
2024-05-07 06:00105.64.35.5544.426.320.7
2024-05-07 05:0085.14.53.7504.522.417.1
2024-05-07 04:0079.79.23.1518.222.116.1
2024-05-07 03:0074.410.13.2522.620.914.9
2024-05-07 02:00125.56.34.0624.522.016.3
2024-05-07 01:00106.022.93.3615.923.517.6
2024-05-07 00:0076.527.03.6483.022.917.0
2024-05-06 23:0061.94.14.8621.025.118.0
2024-05-06 22:0072.63.84.9715.537.327.9
2024-05-06 21:0086.03.68.1733.544.832.4
Remarks:

(1) Time shown is in Hong Kong time.

(2) Concentration shown is in microgram per cubic metre (µg/m3).

(3) Abbreviation:
NO2 - nitrogen dioxide, O3 - ozone,
SO2 - sulphur dioxide, CO - carbon monoxide,
PM10 - respirable suspended particulates,
PM2.5 - fine suspended particulates

(4) The pollutant concentration is based on real time data taken directly from EPD's Air Quality Monitoring Network.

Last revision date: 20:07 07-05-2024