EPD

Back Home

Past 24 Hours Pollutant Concentration Summary

Tsuen Wan
Date TimeNO2O3SO2COPM10PM2.5
2023-12-08 09:0069.433.07.2512.023.812.8
2023-12-08 08:0062.240.46.1444.822.412.9
2023-12-08 07:0041.057.66.0368.521.112.1
2023-12-08 06:0022.678.76.0280.621.011.3
2023-12-08 05:0017.986.06.1278.219.310.6
2023-12-08 04:0017.784.76.1270.119.711.4
2023-12-08 03:0019.487.06.1309.317.89.9
2023-12-08 02:0024.979.56.8348.016.28.3
2023-12-08 01:00----17.810.5
2023-12-08 00:0043.864.55.8389.319.210.9
2023-12-07 23:0047.260.96.8374.318.710.7
2023-12-07 22:0046.560.26.5373.422.013.3
2023-12-07 21:0051.855.86.1354.720.412.1
2023-12-07 20:0059.150.95.5383.318.710.9
2023-12-07 19:0066.243.65.4390.020.211.3
2023-12-07 18:0072.755.55.7367.421.510.6
2023-12-07 17:0060.977.96.1367.920.48.6
2023-12-07 16:0043.698.56.5317.218.17.2
2023-12-07 15:0055.985.96.7321.016.06.8
2023-12-07 14:0040.085.36.0259.616.98.4
2023-12-07 13:00------
2023-12-07 12:00----18.15.8
2023-12-07 11:0055.847.66.7385.115.06.0
2023-12-07 10:0050.738.06.5354.813.46.9
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.