EPD

Back Home

Past 24 Hours Pollutant Concentration Summary

Central/Western
Date TimeNO2O3SO2COPM10PM2.5
2023-09-26 06:0011.361.63.5-9.26.7
2023-09-26 05:009.169.63.4-7.54.7
2023-09-26 04:009.370.03.5-6.63.8
2023-09-26 03:008.469.33.4-6.83.9
2023-09-26 02:008.572.83.2-9.86.4
2023-09-26 01:0011.380.23.1-9.05.1
2023-09-26 00:0015.777.33.1-11.16.5
2023-09-25 23:0021.468.63.2-12.47.0
2023-09-25 22:0034.157.33.2-14.69.4
2023-09-25 21:0032.959.63.2-15.49.8
2023-09-25 20:0031.868.03.1-17.110.7
2023-09-25 19:0037.382.33.1-17.810.7
2023-09-25 18:0031.485.53.3-16.89.7
2023-09-25 17:0027.382.23.3-14.67.9
2023-09-25 16:0022.577.33.1-12.66.8
2023-09-25 15:0025.979.03.3-12.77.1
2023-09-25 14:0022.980.83.6-12.07.1
2023-09-25 13:0026.374.23.7-13.98.3
2023-09-25 12:0027.865.63.6-13.47.1
2023-09-25 11:0025.760.13.9-13.76.5
2023-09-25 10:0027.755.24.1-12.96.4
2023-09-25 09:0026.941.54.2-9.85.6
2023-09-25 08:0028.429.84.3-10.55.8
2023-09-25 07:0021.828.83.7-8.43.5
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.