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Past 24 Hours Pollutant Concentration Summary

Tsuen Wan
Date TimeNO2O3SO2COPM10PM2.5
2021-10-16 10:0040.821.74.91,140.224.217.2
2021-10-16 09:0031.818.94.91,080.822.216.0
2021-10-16 08:0024.818.84.5983.123.216.4
2021-10-16 07:0029.315.44.4919.217.811.0
2021-10-16 06:0029.318.04.4829.518.511.8
2021-10-16 05:0026.823.15.0790.415.810.4
2021-10-16 04:0024.728.04.8773.012.78.4
2021-10-16 03:0022.430.04.3751.512.17.6
2021-10-16 02:0019.540.94.3708.914.08.8
2021-10-16 01:0040.715.24.6804.613.310.3
2021-10-16 00:0046.210.64.6853.512.310.3
2021-10-15 23:0046.17.94.6882.910.08.4
2021-10-15 22:0047.210.64.8875.012.511.5
2021-10-15 21:0044.017.94.6913.111.810.7
2021-10-15 20:0049.615.74.9873.89.38.4
2021-10-15 19:0049.914.45.0886.511.811.3
2021-10-15 18:0047.519.34.7885.110.79.7
2021-10-15 17:0040.825.94.2815.011.39.8
2021-10-15 16:0037.029.34.3816.111.310.1
2021-10-15 15:0029.441.24.2790.28.57.5
2021-10-15 14:0032.831.24.4806.211.911.1
2021-10-15 13:0034.927.04.4869.314.913.2
2021-10-15 12:0029.128.94.7874.816.013.9
2021-10-15 11:0034.722.24.9916.718.715.4
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.