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Past 24 Hours Pollutant Concentration Summary

Central/Western
Date TimeNO2O3SO2COPM10PM2.5
2021-10-16 10:0036.028.02.7-24.616.6
2021-10-16 09:0032.123.92.4-21.714.3
2021-10-16 08:0035.715.32.4-20.813.9
2021-10-16 07:0030.519.92.2-20.912.8
2021-10-16 06:0013.944.82.6-20.711.4
2021-10-16 05:009.952.92.5-18.210.0
2021-10-16 04:0011.353.72.4-14.87.2
2021-10-16 03:009.756.42.5-15.27.0
2021-10-16 02:0015.951.92.5-15.68.4
2021-10-16 01:0022.943.62.3-13.28.6
2021-10-16 00:0044.818.92.2-12.08.9
2021-10-15 23:0042.314.82.3-9.87.6
2021-10-15 22:0049.912.43.0-9.17.8
2021-10-15 21:0046.716.92.8-8.06.8
2021-10-15 20:0043.226.12.6-6.95.2
2021-10-15 19:0045.720.92.5-6.85.5
2021-10-15 18:0048.418.82.7-8.46.0
2021-10-15 17:0037.530.22.7-8.65.3
2021-10-15 16:0039.232.32.4-9.87.6
2021-10-15 15:0035.735.62.9-7.45.8
2021-10-15 14:0031.334.52.6-7.26.1
2021-10-15 13:0038.028.53.0-8.77.2
2021-10-15 12:0035.323.92.7-14.311.5
2021-10-15 11:0040.418.34.1-21.417.0
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.