Past 24 Hours Pollutant Concentration Summary

Central
Date TimeNO2O3SO2COPM10PM2.5
2017-11-21 04:0022.122.13.3590.113.29.7
2017-11-21 03:0028.215.92.8598.115.711.1
2017-11-21 02:0036.78.23.3628.012.27.3
2017-11-21 01:0054.01.26.1804.918.19.5
2017-11-21 00:0057.90.67.0845.217.28.6
2017-11-20 23:0059.40.67.2872.518.18.7
2017-11-20 22:0067.50.87.0891.224.912.5
2017-11-20 21:0083.61.09.3976.924.112.4
2017-11-20 20:0093.31.213.8982.723.811.7
2017-11-20 19:00106.91.116.71,005.825.913.5
2017-11-20 18:00102.01.314.0939.230.415.1
2017-11-20 17:0083.01.510.3905.028.413.1
2017-11-20 16:0079.51.67.8871.129.914.5
2017-11-20 15:0068.02.37.1876.833.518.4
2017-11-20 14:0078.81.98.5922.638.322.3
2017-11-20 13:0077.41.79.2878.137.422.7
2017-11-20 12:0097.91.511.2957.934.321.1
2017-11-20 11:0084.31.410.5960.330.619.3
2017-11-20 10:0080.91.311.1985.029.418.1
2017-11-20 09:0086.20.813.6961.329.720.0
2017-11-20 08:0069.41.110.7855.330.721.5
2017-11-20 07:0053.51.65.6797.528.418.1
2017-11-20 06:0043.610.34.1706.128.419.5
2017-11-20 05:0028.626.33.7662.632.721.8
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.

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Last revision date:04:06 21-11-2017