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Past 24 Hours Pollutant Concentration Summary

Central/Western
Date TimeNO2O3SO2COPM10PM2.5
2023-12-04 17:0073.9129.15.1-72.451.6
2023-12-04 16:0071.9108.05.0-62.045.2
2023-12-04 15:0067.986.23.6-54.240.5
2023-12-04 14:0059.772.82.4-42.133.9
2023-12-04 13:0053.565.72.3-39.531.1
2023-12-04 12:0064.544.34.2-47.334.7
2023-12-04 11:0059.937.51.7-44.434.7
2023-12-04 10:0054.732.62.0-52.438.1
2023-12-04 09:0061.019.62.3-50.236.7
2023-12-04 08:0058.918.62.0-46.834.7
2023-12-04 07:0030.755.81.1-38.627.0
2023-12-04 06:0018.675.51.6-35.725.8
2023-12-04 05:0017.184.12.0-32.521.8
2023-12-04 04:0013.393.62.0-28.819.1
2023-12-04 03:0012.898.21.4-24.917.9
2023-12-04 02:0013.597.61.4-24.116.8
2023-12-04 01:00-88.2--26.519.8
2023-12-04 00:0023.195.02.0-37.028.2
2023-12-03 23:0027.5100.62.7-42.832.2
2023-12-03 22:0029.5101.92.9-41.831.9
2023-12-03 21:0033.695.22.5-40.230.9
2023-12-03 20:0034.194.72.1-39.931.0
2023-12-03 19:0035.793.82.2-37.328.9
2023-12-03 18:0040.287.52.2-36.828.3
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.