Past 24 Hours Pollutant Concentration Summary

Tsuen Wan
Date TimeNO2O3SO2COPM10PM2.5
2019-08-18 04:0013.024.87.0250.29.71.3
2019-08-18 03:0016.023.87.1251.815.56.7
2019-08-18 02:0027.510.98.1249.312.36.3
2019-08-18 01:0035.65.47.6273.314.23.8
2019-08-18 00:0030.911.47.2299.515.49.3
2019-08-17 23:0036.17.97.6321.911.18.4
2019-08-17 22:0039.15.58.9335.512.48.5
2019-08-17 21:0050.12.810.1517.912.96.0
2019-08-17 20:0048.40.97.6473.711.44.6
2019-08-17 19:0051.40.97.5458.111.33.6
2019-08-17 18:0040.67.76.9378.516.03.7
2019-08-17 17:0058.210.47.4435.921.713.3
2019-08-17 16:0052.727.57.0427.623.014.1
2019-08-17 15:0045.225.06.9377.421.415.2
2019-08-17 14:0042.120.47.6397.79.93.9
2019-08-17 13:0056.78.87.6481.08.11.4
2019-08-17 12:0055.87.07.8396.019.47.8
2019-08-17 11:0064.511.48.5466.021.211.9
2019-08-17 10:0038.725.49.1457.822.814.0
2019-08-17 09:0041.316.78.4492.917.89.4
2019-08-17 08:0022.617.26.5320.116.28.2
2019-08-17 07:0019.510.66.3298.715.44.2
2019-08-17 06:0019.813.66.4262.916.69.9
2019-08-17 05:0011.523.16.4261.117.35.0
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:04:07 18-08-2019