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Past 24 Hours Pollutant Concentration Summary

Central/Western
Date TimeNO2O3SO2COPM10PM2.5
2021-06-15 05:003.354.14.8-11.66.2
2021-06-15 04:00-50.7--9.84.9
2021-06-15 03:008.348.54.3-9.74.7
2021-06-15 02:003.553.64.1-10.14.6
2021-06-15 01:0011.046.74.2-12.05.8
2021-06-15 00:0014.441.84.2-8.34.2
2021-06-14 23:0010.846.04.1-9.54.4
2021-06-14 22:0014.242.24.0-11.25.3
2021-06-14 21:0010.447.14.0-14.07.4
2021-06-14 20:0011.351.13.9-13.87.4
2021-06-14 19:009.851.14.0-13.57.2
2021-06-14 18:009.154.94.1-13.46.6
2021-06-14 17:0010.952.94.1-12.96.8
2021-06-14 16:005.062.13.9-13.47.6
2021-06-14 15:006.763.14.0-12.56.5
2021-06-14 14:007.863.84.0-12.56.6
2021-06-14 13:007.562.74.0-13.07.1
2021-06-14 12:0011.253.54.8-11.05.0
2021-06-14 11:0012.351.74.6-11.35.7
2021-06-14 10:0016.943.15.4-10.34.4
2021-06-14 09:0021.032.15.5-8.73.0
2021-06-14 08:0012.237.54.1-9.24.0
2021-06-14 07:0013.035.04.0-4.60.8
2021-06-14 06:0011.234.44.1-8.43.9
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.