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Past 24 Hours Pollutant Concentration Summary

Central/Western
Date TimeNO2O3SO2COPM10PM2.5
2017-11-21 21:0097.512.67.0-43.225.5
2017-11-21 20:0083.123.06.3-22.613.9
2017-11-21 19:0068.938.75.7-35.120.1
2017-11-21 18:00101.412.16.8-50.227.4
2017-11-21 17:0091.918.510.5-42.124.5
2017-11-21 16:0073.919.49.2-27.617.8
2017-11-21 15:0056.726.25.9-22.315.6
2017-11-21 14:0036.036.15.1-20.115.1
2017-11-21 13:0033.527.45.1-18.812.8
2017-11-21 12:0037.818.26.0-23.914.9
2017-11-21 11:0046.37.27.1-26.616.0
2017-11-21 10:0044.54.87.8-24.414.2
2017-11-21 09:0041.03.97.9-22.514.7
2017-11-21 08:0037.74.87.2-22.115.0
2017-11-21 07:0031.45.95.9-21.214.0
2017-11-21 06:0027.112.95.8-20.512.8
2017-11-21 05:0016.028.26.1-21.814.1
2017-11-21 04:0013.731.56.5-20.913.0
2017-11-21 03:0024.821.35.9-21.613.9
2017-11-21 02:0040.74.46.5-22.514.4
2017-11-21 01:0042.81.96.9-20.511.3
2017-11-21 00:0040.92.26.7-19.510.2
2017-11-20 23:0043.42.46.7-19.88.7
2017-11-20 22:0047.32.26.5-22.09.2
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:21:06 21-11-2017