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Past 24 Hours Pollutant Concentration Summary

Tsuen Wan
Date TimeNO2O3SO2COPM10PM2.5
2022-01-23 02:0019.554.45.0651.42.31.2
2022-01-23 01:00----0.30.0
2022-01-23 00:0026.350.64.0713.50.1-
2022-01-22 23:0026.949.73.6758.33.9-
2022-01-22 22:0028.547.84.1762.61.90.8
2022-01-22 21:0033.246.03.9775.05.95.5
2022-01-22 20:0041.642.44.2802.75.75.4
2022-01-22 19:0052.331.34.4837.90.30.0
2022-01-22 18:0065.622.84.7909.70.70.1
2022-01-22 17:0054.028.74.4846.93.2-
2022-01-22 16:0042.634.04.3801.20.10.0
2022-01-22 15:0038.242.44.3792.40.50.4
2022-01-22 14:0041.932.94.3854.32.11.8
2022-01-22 13:0043.131.84.3831.10.5-
2022-01-22 12:0040.631.94.3839.21.8-
2022-01-22 11:0039.929.44.1848.93.2-
2022-01-22 10:0043.022.54.3878.16.04.7
2022-01-22 09:0046.018.54.4855.57.26.9
2022-01-22 08:0043.621.44.4855.87.46.1
2022-01-22 07:0036.129.14.3817.812.911.8
2022-01-22 06:0032.834.44.4750.65.85.4
2022-01-22 05:0014.151.73.8696.56.8-
2022-01-22 04:0010.859.23.9693.02.62.2
2022-01-22 03:0011.362.43.8694.85.54.8
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.