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Central/Western
Date TimeNO2O3SO2COPM10PM2.5
2022-01-23 00:0021.964.82.8-5.34.1
2022-01-22 23:0025.860.12.6-6.34.5
2022-01-22 22:0024.359.22.7-6.64.6
2022-01-22 21:0027.659.52.6-7.15.2
2022-01-22 20:0032.956.92.6-7.15.7
2022-01-22 19:0038.852.82.7-5.24.1
2022-01-22 18:0051.442.32.8-7.74.9
2022-01-22 17:0056.938.62.8-8.25.2
2022-01-22 16:0043.452.92.4-8.97.1
2022-01-22 15:0042.052.52.3-7.66.7
2022-01-22 14:0040.550.22.7-3.52.8
2022-01-22 13:0038.947.72.3-5.54.4
2022-01-22 12:0039.747.51.9-5.03.6
2022-01-22 11:0044.139.51.1-3.93.4
2022-01-22 10:0039.041.40.7-3.63.5
2022-01-22 09:0038.836.10.7-8.1-
2022-01-22 08:0028.843.30.7-5.2-
2022-01-22 07:0020.251.00.7-4.74.6
2022-01-22 06:0011.965.30.9-8.46.7
2022-01-22 05:0011.568.60.9-7.85.3
2022-01-22 04:0010.971.80.8-7.85.4
2022-01-22 03:0011.573.50.9-10.38.6
2022-01-22 02:0014.075.41.1-10.68.5
2022-01-22 01:0015.576.61.2-14.511.5
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 23-01-2022