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Past 24 Hours Pollutant Concentration Summary

Central/Western
Date TimeNO2O3SO2COPM10PM2.5
2021-12-02 08:0043.859.36.0-29.014.9
2021-12-02 07:0031.167.96.2-24.911.8
2021-12-02 06:0020.778.0--25.011.3
2021-12-02 05:0016.683.95.5-25.611.7
2021-12-02 04:00-83.4--24.510.4
2021-12-02 03:0020.182.85.0-25.311.3
2021-12-02 02:00-85.75.6-29.213.3
2021-12-02 01:0026.581.05.6-31.313.9
2021-12-02 00:0033.9-5.4-33.414.7
2021-12-01 23:0031.978.44.9-34.916.3
2021-12-01 22:0034.882.05.4-32.313.5
2021-12-01 21:0044.574.05.0-35.114.8
2021-12-01 20:0044.077.84.7-34.511.8
2021-12-01 19:0054.173.44.2-36.912.1
2021-12-01 18:0055.977.03.8-43.515.6
2021-12-01 17:0052.881.23.5-39.914.1
2021-12-01 16:0053.689.23.7-39.016.2
2021-12-01 15:0043.194.93.5-32.816.5
2021-12-01 14:0033.396.43.3-28.514.6
2021-12-01 13:0031.790.03.2-31.214.8
2021-12-01 12:0040.973.93.1-33.814.4
2021-12-01 11:0050.258.33.4-34.015.5
2021-12-01 10:0055.050.34.0-28.313.7
2021-12-01 09:0039.662.93.6-23.911.7
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.