Central
Date TimeNO2O3SO2COPM10PM2.5
2021-01-24 00:00148.72.09.51,359.980.061.0
2021-01-23 23:00160.01.911.41,333.077.355.3
2021-01-23 22:00168.11.515.41,306.779.850.3
2021-01-23 21:00172.61.514.11,208.389.548.3
2021-01-23 20:00171.22.011.41,139.770.143.6
2021-01-23 19:00168.51.912.31,173.161.341.9
2021-01-23 18:00174.55.89.9989.458.741.4
2021-01-23 17:00162.58.68.5932.574.852.1
2021-01-23 16:00172.97.78.31,090.869.750.0
2021-01-23 15:00129.427.96.2880.955.341.1
2021-01-23 14:00138.39.88.6954.741.228.2
2021-01-23 13:00107.219.36.1874.134.724.4
2021-01-23 12:00102.813.56.5895.140.630.0
2021-01-23 11:0092.59.16.8887.554.641.5
2021-01-23 10:0089.53.58.5911.876.156.7
2021-01-23 09:0098.81.011.21,162.975.556.3
2021-01-23 08:0095.90.312.21,319.373.854.0
2021-01-23 07:0094.50.011.81,337.883.758.7
2021-01-23 06:00105.30.312.61,379.688.562.4
2021-01-23 05:00108.40.711.31,214.284.360.5
2021-01-23 04:00109.30.59.91,217.684.560.2
2021-01-23 03:00106.30.88.61,147.786.862.0
2021-01-23 02:00111.20.88.51,177.288.263.8
2021-01-23 01:00108.51.18.11,126.772.953.9
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: 00:07 24-01-2021