Past 24 Hours Pollutant Concentration Summary

Tsuen Wan
Date TimeNO2O3SO2COPM10PM2.5
2019-02-22 20:00130.523.312.71,298.960.246.8
2019-02-22 19:00133.534.914.31,273.061.847.5
2019-02-22 18:00126.154.013.61,240.962.246.2
2019-02-22 17:00120.259.113.01,232.556.540.2
2019-02-22 16:0098.943.38.81,232.252.134.5
2019-02-22 15:0082.031.47.61,253.347.331.3
2019-02-22 14:0072.520.47.71,263.337.526.5
2019-02-22 13:0058.720.46.81,221.617.711.9
2019-02-22 12:0040.118.16.51,152.316.311.0
2019-02-22 11:0037.110.26.31,187.616.713.0
2019-02-22 10:0036.64.06.51,253.818.415.0
2019-02-22 09:0039.53.36.71,256.217.414.1
2019-02-22 08:0040.62.47.01,268.319.116.2
2019-02-22 07:0040.11.66.61,195.119.817.2
2019-02-22 06:0039.21.76.31,156.815.112.9
2019-02-22 05:0040.41.46.51,130.916.013.0
2019-02-22 04:0043.41.47.81,106.114.812.9
2019-02-22 03:0046.01.38.11,085.713.712.2
2019-02-22 02:0047.81.49.01,058.325.320.7
2019-02-22 01:00----26.518.5
2019-02-22 00:0048.617.55.6696.625.118.2
2019-02-21 23:0052.823.46.0781.122.516.9
2019-02-21 22:0047.335.56.0773.223.218.7
2019-02-21 21:0056.934.56.0828.526.522.1
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:20:07 22-02-2019