EPD

Back Home

Past 24 Hours Pollutant Concentration Summary

Southern
Date TimeNO2O3SO2COPM10PM2.5
2023-02-05 19:0019.160.93.9302.98.3-
2023-02-05 18:0019.061.84.2299.513.80.9
2023-02-05 17:0021.062.84.2307.113.20.9
2023-02-05 16:0022.063.44.2312.212.07.7
2023-02-05 15:0021.363.94.2356.219.118.0
2023-02-05 14:0019.264.54.4342.224.020.2
2023-02-05 13:0016.662.14.5335.224.015.2
2023-02-05 12:0021.857.14.5346.023.214.7
2023-02-05 11:0022.250.84.5348.517.713.3
2023-02-05 10:0020.451.14.3366.318.514.5
2023-02-05 09:0025.848.54.4351.623.016.6
2023-02-05 08:0024.152.24.7328.827.217.6
2023-02-05 07:0020.456.74.7311.027.816.9
2023-02-05 06:0014.859.44.7319.326.417.1
2023-02-05 05:0011.267.04.5306.732.119.2
2023-02-05 04:0010.866.75.0339.636.423.0
2023-02-05 03:0017.260.05.1383.738.329.8
2023-02-05 02:0018.961.95.1373.943.932.5
2023-02-05 01:0022.562.35.1362.845.328.8
2023-02-05 00:0026.161.65.0378.842.822.3
2023-02-04 23:0028.565.85.0349.639.317.0
2023-02-04 22:0024.271.74.8343.530.815.1
2023-02-04 21:0024.775.35.0336.524.512.1
2023-02-04 20:0026.677.45.0312.825.813.1
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.