Yuen Long
Date TimeNO2O3SO2COPM10PM2.5
2023-02-07 14:0038.237.44.1666.614.79.4
2023-02-07 13:0036.531.24.0612.919.713.6
2023-02-07 12:0048.017.74.5706.422.315.8
2023-02-07 11:0047.613.24.3729.118.913.8
2023-02-07 10:0044.212.24.3746.315.811.8
2023-02-07 09:0046.110.24.2708.415.713.3
2023-02-07 08:0039.714.73.7708.015.612.5
2023-02-07 07:0043.07.74.1698.915.312.7
2023-02-07 06:0029.818.83.6698.313.310.6
2023-02-07 05:0022.928.63.6639.513.110.7
2023-02-07 04:0017.936.23.8594.814.611.2
2023-02-07 03:0022.634.64.1650.114.39.6
2023-02-07 02:0027.928.65.1658.114.910.5
2023-02-07 01:00----18.413.6
2023-02-07 00:0039.826.63.8658.722.616.2
2023-02-06 23:0053.817.74.3717.923.918.1
2023-02-06 22:0054.521.84.7736.036.227.5
2023-02-06 21:0077.011.64.9815.433.724.9
2023-02-06 20:0075.38.75.4855.025.313.8
2023-02-06 19:0082.85.55.9787.123.213.2
2023-02-06 18:0069.819.74.9734.019.712.4
2023-02-06 17:0050.534.84.1700.322.416.0
2023-02-06 16:0051.032.73.9734.121.717.0
2023-02-06 15:0032.337.53.8719.214.412.1
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.

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Last revision date: 14:07 07-02-2023