Yuen Long
Date TimeNO2O3SO2COPM10PM2.5
2023-03-23 12:0017.134.74.1668.721.815.6
2023-03-23 11:0016.535.24.0689.322.016.9
2023-03-23 10:0024.128.04.3707.022.217.5
2023-03-23 09:0027.223.04.4667.820.415.5
2023-03-23 08:0035.512.94.4774.219.014.2
2023-03-23 07:0027.918.64.2682.219.715.5
2023-03-23 06:0017.126.04.1651.817.613.5
2023-03-23 05:0016.426.44.0645.916.412.2
2023-03-23 04:0014.430.74.0636.815.911.7
2023-03-23 03:0015.231.93.5653.416.912.3
2023-03-23 02:0018.032.94.1650.317.212.7
2023-03-23 01:00----14.09.3
2023-03-23 00:0021.424.23.9657.415.810.5
2023-03-22 23:0024.221.94.2690.016.711.2
2023-03-22 22:0022.423.64.2671.417.511.4
2023-03-22 21:0029.318.74.2745.118.912.1
2023-03-22 20:0030.018.93.6710.720.112.1
2023-03-22 19:0028.420.54.1722.515.39.6
2023-03-22 18:0025.025.94.1674.913.89.9
2023-03-22 17:0027.724.34.2671.810.56.9
2023-03-22 16:0030.421.04.3672.813.69.8
2023-03-22 15:0023.027.64.2663.315.99.4
2023-03-22 14:0022.531.24.2670.817.210.1
2023-03-22 13:0019.533.14.3648.316.29.0
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.

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Last revision date: 12:07 23-03-2023