EPD

Back Home

Past 24 Hours Pollutant Concentration Summary

Yuen Long
Date TimeNO2O3SO2COPM10PM2.5
2024-03-28 22:0094.210.33.21,019.742.622.3
2024-03-28 21:0084.524.03.0971.236.318.6
2024-03-28 20:0085.531.84.0920.738.019.3
2024-03-28 19:0065.856.14.0885.331.714.1
2024-03-28 18:0043.283.73.7870.633.015.7
2024-03-28 17:0037.286.12.7767.833.614.7
2024-03-28 16:0062.652.83.7833.633.115.5
2024-03-28 15:0061.845.33.9885.238.719.9
2024-03-28 14:0060.049.83.4840.038.217.9
2024-03-28 13:0051.258.92.2886.036.818.2
2024-03-28 12:0051.552.63.2867.540.721.3
2024-03-28 11:0045.556.62.3866.337.519.0
2024-03-28 10:0038.059.61.9833.733.117.1
2024-03-28 09:0049.948.61.6869.330.113.7
2024-03-28 08:0037.955.61.8839.528.113.5
2024-03-28 07:0022.268.11.5796.523.312.1
2024-03-28 06:0015.874.91.5800.020.610.2
2024-03-28 05:0017.681.21.7795.020.210.1
2024-03-28 04:0011.388.71.5784.119.811.9
2024-03-28 03:009.494.92.1775.415.59.7
2024-03-28 02:009.499.11.4778.118.012.0
2024-03-28 01:0013.6101.31.5770.818.911.7
2024-03-28 00:0023.994.92.1798.022.214.1
2024-03-27 23:0025.795.02.0804.022.213.9
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.