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Past 24 Hours Pollutant Concentration Summary

Tsuen Wan
Date TimeNO2O3SO2COPM10PM2.5
2023-09-28 23:0029.654.54.4661.914.59.7
2023-09-28 22:0034.457.14.7676.017.012.6
2023-09-28 21:0038.356.34.8682.615.611.1
2023-09-28 20:0041.058.64.8677.616.312.1
2023-09-28 19:0048.639.84.9630.814.410.6
2023-09-28 18:0043.140.74.9596.114.911.5
2023-09-28 17:0037.750.85.1582.312.79.0
2023-09-28 16:0030.557.95.1579.014.310.4
2023-09-28 15:0029.266.04.8570.418.014.3
2023-09-28 14:0028.762.94.9564.614.711.5
2023-09-28 13:0027.468.25.0548.211.78.3
2023-09-28 12:0027.868.05.0571.814.310.0
2023-09-28 11:0028.363.24.8586.617.912.7
2023-09-28 10:0033.444.25.3680.114.49.8
2023-09-28 09:0038.936.04.9680.212.78.6
2023-09-28 08:0031.539.64.9675.412.89.1
2023-09-28 07:0029.739.54.8644.411.97.6
2023-09-28 06:0014.151.54.8601.315.510.7
2023-09-28 05:0010.754.04.7586.113.99.0
2023-09-28 04:009.055.44.4553.313.68.5
2023-09-28 03:0010.351.84.7547.315.09.7
2023-09-28 02:0012.755.24.6555.918.912.1
2023-09-28 01:0020.862.64.8594.121.614.3
2023-09-28 00:0030.354.04.9637.621.514.7
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.