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Past 24 Hours Pollutant Concentration Summary

Tsuen Wan
Date TimeNO2O3SO2COPM10PM2.5
2023-02-05 19:0042.633.48.0601.119.616.5
2023-02-05 18:0044.633.08.1619.717.812.2
2023-02-05 17:0051.726.89.8631.630.422.9
2023-02-05 16:0073.67.912.2609.637.329.2
2023-02-05 15:0067.812.411.8571.022.016.7
2023-02-05 14:0045.333.68.2568.019.615.9
2023-02-05 13:0025.551.87.6521.515.511.0
2023-02-05 12:0030.146.17.5544.216.912.9
2023-02-05 11:0033.538.77.7572.529.325.1
2023-02-05 10:0027.744.17.7520.123.517.9
2023-02-05 09:0031.841.37.9502.228.121.7
2023-02-05 08:0028.941.87.9488.833.127.3
2023-02-05 07:0024.346.97.7490.49.64.4
2023-02-05 06:0015.955.07.7465.929.921.6
2023-02-05 05:0013.157.98.0474.239.029.8
2023-02-05 04:0014.952.98.2502.635.925.9
2023-02-05 03:0016.054.38.7507.632.521.2
2023-02-05 02:0018.754.89.6510.440.127.9
2023-02-05 01:00----42.829.8
2023-02-05 00:0029.454.47.8510.331.419.3
2023-02-04 23:0032.055.97.9529.829.218.9
2023-02-04 22:0042.945.88.1587.430.620.6
2023-02-04 21:0047.044.78.0582.836.028.3
2023-02-04 20:0051.743.28.1615.332.023.7
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.