EPD

Back Home

Past 24 Hours Pollutant Concentration Summary

Central/Western
Date TimeNO2O3SO2COPM10PM2.5
2023-09-29 21:0020.866.73.0-11.710.6
2023-09-29 20:0031.564.42.8-8.66.7
2023-09-29 19:0023.474.32.9-6.45.0
2023-09-29 18:0034.859.33.2-8.16.1
2023-09-29 17:0031.465.92.8-9.76.8
2023-09-29 16:0034.271.32.7-11.68.0
2023-09-29 15:0029.075.62.8-10.36.9
2023-09-29 14:0024.381.12.6-7.95.8
2023-09-29 13:0021.980.12.6-10.36.8
2023-09-29 12:0026.971.53.1-12.99.0
2023-09-29 11:0033.059.73.6-13.79.4
2023-09-29 10:0036.647.44.0-10.26.5
2023-09-29 09:0044.232.93.8-7.55.9
2023-09-29 08:0034.436.03.0-1.0-
2023-09-29 07:0014.854.62.9-5.54.7
2023-09-29 06:008.663.63.0-5.74.1
2023-09-29 05:007.564.23.2-4.23.3
2023-09-29 04:009.462.93.5-6.64.1
2023-09-29 03:009.665.33.2-6.63.9
2023-09-29 02:0011.467.13.1-6.33.4
2023-09-29 01:00-67.0--10.46.6
2023-09-29 00:0020.857.73.0-10.77.4
2023-09-28 23:0022.364.02.6-12.89.3
2023-09-28 22:0021.972.83.1-13.09.6
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.