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Past 24 Hours Pollutant Concentration Summary

Central/Western
Date TimeNO2O3SO2COPM10PM2.5
2020-07-11 22:0013.023.63.5-12.77.7
2020-07-11 21:0018.219.93.7-15.19.3
2020-07-11 20:0019.323.63.9-12.16.5
2020-07-11 19:0012.132.73.5-10.24.7
2020-07-11 18:008.737.33.4-10.05.0
2020-07-11 17:009.737.93.7-12.37.2
2020-07-11 16:005.639.83.1-11.96.9
2020-07-11 15:007.041.53.7-14.37.8
2020-07-11 14:0013.441.34.4-15.08.6
2020-07-11 13:0019.835.35.2-15.39.1
2020-07-11 12:0016.736.54.0-12.77.2
2020-07-11 11:007.543.33.2-11.86.0
2020-07-11 10:0012.634.83.3-13.97.9
2020-07-11 09:0011.530.03.2-14.28.4
2020-07-11 08:0013.322.73.4-12.87.2
2020-07-11 07:0010.024.23.2-11.76.0
2020-07-11 06:0012.623.83.4-11.56.0
2020-07-11 05:008.226.53.0-10.95.9
2020-07-11 04:006.227.93.1-10.34.7
2020-07-11 03:005.928.73.1-11.25.6
2020-07-11 02:007.827.53.1-14.08.5
2020-07-11 01:0011.723.03.4-12.26.4
2020-07-11 00:0013.721.83.2-13.37.1
2020-07-10 23:0016.419.53.2-14.07.2
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.