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Past 24 Hours Pollutant Concentration Summary

Tsuen Wan
Date TimeNO2O3SO2COPM10PM2.5
2022-08-11 10:0037.416.48.4399.710.29.5
2022-08-11 09:0041.99.38.5399.59.03.9
2022-08-11 08:0038.911.28.5363.614.87.2
2022-08-11 07:0027.017.97.9257.99.23.1
2022-08-11 06:0013.531.48.0198.99.93.8
2022-08-11 05:008.535.77.8152.113.85.3
2022-08-11 04:007.236.57.9150.610.47.2
2022-08-11 03:007.038.48.4147.86.31.5
2022-08-11 02:00----12.38.4
2022-08-11 01:00----12.73.5
2022-08-11 00:0018.432.37.9205.05.91.3
2022-08-10 23:0020.431.27.8218.95.52.6
2022-08-10 22:0024.329.87.9261.09.46.6
2022-08-10 21:0030.923.97.9322.116.1-
2022-08-10 20:0041.015.58.0344.812.67.5
2022-08-10 19:0040.414.98.3344.312.610.6
2022-08-10 18:0044.313.88.5338.410.53.2
2022-08-10 17:00----17.66.9
2022-08-10 16:00----17.96.8
2022-08-10 15:00----17.87.4
2022-08-10 14:0024.928.38.0819.111.12.1
2022-08-10 13:0028.224.87.9826.08.34.8
2022-08-10 12:0022.129.97.9803.611.55.7
2022-08-10 11:0023.729.17.9806.814.85.4
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.