Past 24 Hours Pollutant Concentration Summary

Central/Western
Date TimeNO2O3SO2COPM10PM2.5
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
2017-11-20 21:0051.32.26.3-24.711.7
2017-11-20 20:0051.92.66.2-26.313.1
2017-11-20 19:0054.72.65.9-24.811.4
2017-11-20 18:0053.24.05.5-26.212.1
2017-11-20 17:0045.27.35.3-28.013.2
2017-11-20 16:0045.18.75.9-24.88.4
2017-11-20 15:0035.815.35.7-28.313.1
2017-11-20 14:0035.910.86.3-29.415.0
2017-11-20 13:0037.210.66.4-31.617.6
2017-11-20 12:0039.38.17.0-28.716.2
2017-11-20 11:0039.86.47.1-28.317.2
2017-11-20 10:0042.45.37.5-30.018.1
2017-11-20 09:0039.44.47.7-32.120.3
2017-11-20 08:0040.23.57.7-33.621.7
2017-11-20 07:0037.76.87.4-36.324.0
2017-11-20 06:0025.121.27.3-39.126.0
2017-11-20 05:0021.529.67.5-47.230.8
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:04:06 21-11-2017