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Past 24 Hours Pollutant Concentration Summary

Yuen Long
Date TimeNO2O3SO2COPM10PM2.5
2021-12-02 07:0035.851.014.6523.436.917.2
2021-12-02 06:0028.158.615.1499.435.316.0
2021-12-02 05:0023.864.115.4510.036.116.4
2021-12-02 04:0024.764.316.0506.634.313.6
2021-12-02 03:0028.162.217.5517.537.415.4
2021-12-02 02:0037.053.320.5546.440.417.9
2021-12-02 01:00----42.317.5
2021-12-02 00:0062.432.014.6599.843.016.5
2021-12-01 23:0061.038.914.2583.346.820.2
2021-12-01 22:0068.333.214.1640.750.022.0
2021-12-01 21:0082.429.413.9660.159.625.6
2021-12-01 20:0092.224.813.6649.360.824.7
2021-12-01 19:0073.249.013.3621.559.621.0
2021-12-01 18:0080.252.613.0621.159.518.2
2021-12-01 17:0068.868.613.2571.860.918.7
2021-12-01 16:0057.179.212.5553.757.218.6
2021-12-01 15:0039.493.312.2515.347.617.5
2021-12-01 14:0040.285.812.4539.843.515.8
2021-12-01 13:0037.677.612.4530.444.913.6
2021-12-01 12:0035.768.912.4533.845.714.3
2021-12-01 11:0030.568.812.6523.647.613.0
2021-12-01 10:0029.066.313.0545.950.215.9
2021-12-01 09:0031.462.613.2547.043.715.1
2021-12-01 08:0040.653.513.1551.939.117.7
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.