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Past 24 Hours Pollutant Concentration Summary

Central/Western
Date TimeNO2O3SO2COPM10PM2.5
2022-12-09 17:0072.4101.87.3-60.636.5
2022-12-09 16:0072.199.18.0-60.137.2
2022-12-09 15:0067.077.87.0-32.520.4
2022-12-09 14:0045.764.45.5-28.419.6
2022-12-09 13:0044.847.56.7-28.219.9
2022-12-09 12:0036.443.35.9-26.319.8
2022-12-09 11:0046.428.47.8-26.821.0
2022-12-09 10:0053.620.46.7-22.818.7
2022-12-09 09:0053.719.66.1-16.513.4
2022-12-09 08:0046.424.95.1-14.211.5
2022-12-09 07:0043.023.85.1-15.913.4
2022-12-09 06:0031.536.65.5-20.715.8
2022-12-09 05:0039.632.36.1-21.715.4
2022-12-09 04:0030.646.96.4-23.216.3
2022-12-09 03:0054.133.07.8-23.815.2
2022-12-09 02:00-31.2--38.521.5
2022-12-09 01:0076.822.26.6-47.024.0
2022-12-09 00:0084.120.96.5-55.829.8
2022-12-08 23:0087.029.25.4-52.629.7
2022-12-08 22:0073.647.54.8-48.327.6
2022-12-08 21:0074.065.45.4-55.933.8
2022-12-08 20:00106.466.96.2-71.743.9
2022-12-08 19:00103.2100.57.6-69.142.6
2022-12-08 18:0096.0101.87.5-63.735.8
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.