Past 24 Hours Pollutant Concentration Summary

Tsuen Wan
Date TimeNO2O3SO2COPM10PM2.5
2017-11-21 10:0034.211.08.4542.10.40.0
2017-11-21 09:0031.37.88.4512.37.16.1
2017-11-21 08:0030.97.08.7529.88.67.5
2017-11-21 07:0026.07.49.1477.317.316.4
2017-11-21 06:0020.812.89.1434.619.619.2
2017-11-21 05:0019.817.810.6404.526.3-
2017-11-21 04:00----38.0-
2017-11-21 03:0023.914.78.2406.021.1-
2017-11-21 02:0027.310.58.5443.09.69.0
2017-11-21 01:0030.68.28.1479.89.27.2
2017-11-21 00:0034.15.58.5544.69.76.9
2017-11-20 23:0036.84.98.5575.911.06.0
2017-11-20 22:0035.74.68.5574.715.99.9
2017-11-20 21:0037.05.18.3588.717.28.9
2017-11-20 20:0040.45.28.2578.618.48.5
2017-11-20 19:0047.06.08.6618.9--
2017-11-20 18:0043.79.48.1537.9--
2017-11-20 17:0040.610.78.2562.4--
2017-11-20 16:0036.712.87.8553.2--
2017-11-20 15:0037.212.67.7592.8--
2017-11-20 14:0033.912.67.9580.3--
2017-11-20 13:0026.112.77.8564.5--
2017-11-20 12:0027.59.37.8594.0--
2017-11-20 11:0029.56.87.9654.024.413.9
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:10:06 21-11-2017