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Past 24 Hours Pollutant Concentration Summary

Central/Western
Date TimeNO2O3SO2COPM10PM2.5
2021-05-18 15:0019.142.77.8-12.57.8
2021-05-18 14:0016.750.67.1-10.47.4
2021-05-18 13:0017.947.27.2-12.08.3
2021-05-18 12:0016.849.67.9-14.69.4
2021-05-18 11:0019.143.68.3-9.55.5
2021-05-18 10:007.046.57.3-4.72.6
2021-05-18 09:0012.037.07.6-6.14.1
2021-05-18 08:0017.331.77.6-6.64.7
2021-05-18 07:0019.427.28.2-7.86.1
2021-05-18 06:0019.727.08.1-7.75.7
2021-05-18 05:0014.029.28.3-8.36.0
2021-05-18 04:00-26.9--7.44.8
2021-05-18 03:0019.925.38.0-8.56.5
2021-05-18 02:0016.324.47.3-9.16.4
2021-05-18 01:0018.025.17.7-10.07.6
2021-05-18 00:0023.820.58.1-8.65.5
2021-05-17 23:0017.229.07.2-9.57.2
2021-05-17 22:0018.027.07.0-7.95.5
2021-05-17 21:0012.330.16.2-8.75.8
2021-05-17 20:0012.532.86.1-10.67.6
2021-05-17 19:0015.529.66.5-10.78.0
2021-05-17 18:0016.732.06.5-10.56.8
2021-05-17 17:0016.942.07.0-11.98.0
2021-05-17 16:0017.249.37.4-13.68.8
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.