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Past 24 Hours Pollutant Concentration Summary

Central/Western
Date TimeNO2O3SO2COPM10PM2.5
2019-11-21 08:0064.230.44.4-46.522.7
2019-11-21 07:0025.378.94.2-43.020.1
2019-11-21 06:0019.379.14.1-43.119.5
2019-11-21 05:0012.789.54.3-43.720.3
2019-11-21 04:0014.289.34.2-43.319.3
2019-11-21 03:0015.998.74.6-42.118.7
2019-11-21 02:0015.2102.64.4-41.719.9
2019-11-21 01:0031.891.43.9-39.421.1
2019-11-21 00:0033.491.93.7-37.120.3
2019-11-20 23:0029.199.23.9-38.322.9
2019-11-20 22:0036.096.94.2-40.124.4
2019-11-20 21:0036.2106.24.9-43.726.4
2019-11-20 20:0051.0103.65.6-46.028.7
2019-11-20 19:0041.9118.95.8-45.729.6
2019-11-20 18:0040.7123.56.0-44.828.8
2019-11-20 17:0045.9130.45.9-47.329.3
2019-11-20 16:0070.0117.25.9-44.828.8
2019-11-20 15:0051.5108.04.9-38.726.5
2019-11-20 14:0040.6111.05.0-44.829.2
2019-11-20 13:0046.586.65.9-46.928.5
2019-11-20 12:0049.769.56.5-49.229.1
2019-11-20 11:0042.857.56.1-45.526.9
2019-11-20 10:0050.141.06.0-39.724.5
2019-11-20 09:0039.146.35.6-37.623.3
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.