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Past 24 Hours Pollutant Concentration Summary

Central
Date TimeNO2O3SO2COPM10PM2.5
2022-01-23 02:0021.159.72.1691.47.84.5
2022-01-23 01:0033.650.62.3699.810.66.5
2022-01-23 00:0039.648.12.0706.89.45.8
2022-01-22 23:0041.544.22.0741.511.38.3
2022-01-22 22:0036.843.52.1733.111.88.4
2022-01-22 21:0045.738.22.2774.09.26.4
2022-01-22 20:0054.033.12.5790.86.54.5
2022-01-22 19:0060.829.52.6841.812.19.3
2022-01-22 18:0073.718.23.6920.211.37.6
2022-01-22 17:0075.418.43.6873.29.25.2
2022-01-22 16:0054.837.12.4790.28.76.8
2022-01-22 15:0059.436.42.8903.86.24.6
2022-01-22 14:0059.430.62.8884.22.71.6
2022-01-22 13:0063.626.22.7903.14.93.5
2022-01-22 12:0063.225.93.5881.28.46.9
2022-01-22 11:0063.321.83.0944.77.56.7
2022-01-22 10:0052.625.62.4848.35.65.6
2022-01-22 09:0059.017.52.9855.87.55.3
2022-01-22 08:0052.723.72.3844.97.76.7
2022-01-22 07:0039.233.81.9843.47.87.7
2022-01-22 06:0038.237.91.7837.17.25.7
2022-01-22 05:0026.750.91.9778.36.64.3
2022-01-22 04:0020.957.91.9741.58.06.0
2022-01-22 03:0021.364.01.6739.411.19.3
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.