Welcome to Environmental Protection Department Air Quality Health Index Website


Central
Date TimeNO2O3SO2COPM10PM2.5
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
2024-05-06 20:0087.94.66.8847.736.128.6
2024-05-06 19:0085.14.26.0610.327.319.0
2024-05-06 18:0094.85.45.1527.035.024.4
2024-05-06 17:00112.58.05.6571.236.323.3
2024-05-06 16:00117.37.57.4918.343.529.3
2024-05-06 15:00103.29.26.1797.840.430.0
2024-05-06 14:0087.410.54.8697.333.323.6
2024-05-06 13:0099.49.46.4529.532.822.5
2024-05-06 12:00106.05.87.0507.034.624.7
2024-05-06 11:00100.94.97.9697.139.928.0
2024-05-06 10:0096.06.05.7634.627.119.4
2024-05-06 09:0082.37.33.8414.232.021.9
2024-05-06 08:0073.35.34.1488.831.822.4
2024-05-06 07:0054.14.23.8611.822.414.0
2024-05-06 06:0043.24.62.7514.719.412.1
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: 05:07 07-05-2024