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Past 24 Hours Pollutant Concentration Summary

Central/Western
Date TimeNO2O3SO2COPM10PM2.5
2017-11-23 10:0050.027.68.2-45.231.3
2017-11-23 09:0049.922.28.0-44.031.8
2017-11-23 08:0042.724.37.6-42.832.0
2017-11-23 07:0033.431.87.6-42.031.3
2017-11-23 06:0017.648.47.8-39.129.7
2017-11-23 05:0018.346.96.9-36.127.6
2017-11-23 04:0016.846.86.9-36.126.6
2017-11-23 03:0017.147.45.8-31.421.7
2017-11-23 02:0026.038.85.9-32.921.2
2017-11-23 01:0031.432.75.6-33.319.7
2017-11-23 00:0034.729.25.8-32.315.7
2017-11-22 23:0037.625.86.2-35.419.2
2017-11-22 22:0051.517.57.1-41.020.5
2017-11-22 21:0057.016.57.7-47.122.2
2017-11-22 20:0064.912.57.9-50.622.1
2017-11-22 19:0066.316.88.3-51.120.9
2017-11-22 18:0083.920.110.4-50.321.9
2017-11-22 17:0074.140.19.5-54.225.5
2017-11-22 16:0072.753.010.2-57.131.3
2017-11-22 15:0066.069.111.4-59.633.5
2017-11-22 14:0067.572.18.7-61.533.4
2017-11-22 13:0063.750.58.9-51.024.4
2017-11-22 12:0050.828.010.2-33.915.5
2017-11-22 11:0043.319.89.7-28.715.1
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.

Last revision date:10:06 23-11-2017