EPD

Back Home

Past 24 Hours Pollutant Concentration Summary

Causeway Bay
Date TimeNO2O3SO2COPM10PM2.5
2022-01-25 00:0055.8-3.7748.518.48.6
2022-01-24 23:0046.830.53.2660.428.917.5
2022-01-24 22:0054.130.43.2549.726.017.0
2022-01-24 21:0076.013.65.3829.227.917.7
2022-01-24 20:0073.723.64.4731.447.334.7
2022-01-24 19:0075.626.55.2798.240.230.4
2022-01-24 18:0069.532.64.4813.342.029.7
2022-01-24 17:0080.221.75.2896.444.529.3
2022-01-24 16:0086.216.05.5899.830.119.8
2022-01-24 15:0091.616.06.5905.746.332.4
2022-01-24 14:0088.417.26.3857.339.928.8
2022-01-24 13:0077.020.05.1750.836.626.2
2022-01-24 12:0065.918.95.2675.233.925.5
2022-01-24 11:0072.89.46.8789.146.434.6
2022-01-24 10:0069.79.26.3850.856.545.1
2022-01-24 09:0069.25.37.9756.550.542.7
2022-01-24 08:0072.13.49.4967.533.327.5
2022-01-24 07:0065.52.57.2907.528.622.6
2022-01-24 06:0066.42.55.3774.320.416.4
2022-01-24 05:0061.22.15.5691.424.917.9
2022-01-24 04:0078.62.46.8780.018.512.7
2022-01-24 03:0075.12.55.6770.519.312.3
2022-01-24 02:0072.03.45.1764.127.419.7
2022-01-24 01:0080.13.56.61,021.422.115.7
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.