Welcome to Environmental Protection Department Air Quality Health Index Website


Central
Date TimeNO2O3SO2COPM10PM2.5
2024-03-19 13:0086.79.83.4797.018.413.0
2024-03-19 12:0076.36.23.1827.114.38.6
2024-03-19 11:0067.55.03.4766.516.69.8
2024-03-19 10:0073.22.75.2806.510.57.4
2024-03-19 09:0065.22.84.2718.69.87.6
2024-03-19 08:0070.07.42.1556.528.419.3
2024-03-19 07:0063.225.41.3385.438.522.9
2024-03-19 06:0042.339.20.7353.441.226.6
2024-03-19 05:0034.448.40.7309.536.722.5
2024-03-19 04:0027.058.00.6291.034.820.3
2024-03-19 03:00-59.9--36.919.2
2024-03-19 02:0030.758.20.6347.339.319.8
2024-03-19 01:0045.049.20.8367.334.917.8
2024-03-19 00:0057.041.50.8512.435.618.7
2024-03-18 23:0067.238.20.9435.732.919.8
2024-03-18 22:0056.648.30.7562.932.822.9
2024-03-18 21:0065.941.40.8651.744.529.7
2024-03-18 20:0074.441.70.9614.546.029.7
2024-03-18 19:0077.037.71.4511.139.323.1
2024-03-18 18:0086.632.61.7501.246.126.3
2024-03-18 17:0097.426.32.4440.842.720.5
2024-03-18 16:0087.929.71.6598.044.621.2
2024-03-18 15:0090.423.41.6486.537.119.6
2024-03-18 14:0077.527.11.4554.037.521.7
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: 13:07 19-03-2024