Welcome to Environmental Protection Department Air Quality Health Index Website


Mong Kok
Date TimeNO2O3SO2COPM10PM2.5
2021-06-21 04:0021.452.30.0790.621.310.6
2021-06-21 03:0024.8-0.0825.622.411.6
2021-06-21 02:0019.447.60.0787.621.711.1
2021-06-21 01:0029.440.50.0826.225.014.7
2021-06-21 00:0040.134.10.0870.226.416.7
2021-06-20 23:0052.031.80.0895.622.512.3
2021-06-20 22:0051.235.00.0898.622.913.0
2021-06-20 21:0054.726.50.6937.223.112.6
2021-06-20 20:0053.028.00.7950.321.311.3
2021-06-20 19:0061.826.51.2989.319.510.2
2021-06-20 18:0070.327.81.1937.319.510.5
2021-06-20 17:0061.031.50.7907.221.411.0
2021-06-20 16:0070.731.00.7920.725.714.9
2021-06-20 15:0061.041.20.1968.926.215.3
2021-06-20 14:0059.145.60.1894.922.612.1
2021-06-20 13:0058.541.60.1880.121.511.5
2021-06-20 12:0051.641.30.0868.221.111.1
2021-06-20 11:0044.446.00.0869.820.310.7
2021-06-20 10:0047.939.40.0863.421.612.0
2021-06-20 09:0046.232.30.0864.721.511.4
2021-06-20 08:0050.328.60.0890.020.610.7
2021-06-20 07:0035.237.20.0815.119.19.2
2021-06-20 06:0017.051.40.0761.420.49.7
2021-06-20 05:0020.044.70.0779.018.98.7
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.

Mobile Version | Desktop Version
Last revision date: 04:07 21-06-2021