Yuen Long
Date TimeNO2O3SO2COPM10PM2.5
2023-12-04 19:00111.011.313.3991.783.943.3
2023-12-04 18:00116.028.116.0949.489.949.6
2023-12-04 17:00----98.158.8
2023-12-04 16:00----104.764.0
2023-12-04 15:00----92.153.8
2023-12-04 14:0077.184.110.3895.771.442.9
2023-12-04 13:0054.573.78.2837.453.334.1
2023-12-04 12:0047.259.58.3811.751.033.8
2023-12-04 11:0041.744.38.4815.647.732.2
2023-12-04 10:0042.429.08.7824.443.830.7
2023-12-04 09:0044.022.19.1861.140.729.2
2023-12-04 08:0043.119.48.9842.744.831.2
2023-12-04 07:0036.527.88.4840.055.933.9
2023-12-04 06:0039.228.08.0800.658.835.1
2023-12-04 05:0045.128.17.9866.053.436.3
2023-12-04 04:0034.250.28.4824.350.034.8
2023-12-04 03:0036.654.28.5800.248.834.3
2023-12-04 02:00----42.831.2
2023-12-04 01:00----44.032.5
2023-12-04 00:0027.191.28.6822.742.931.0
2023-12-03 23:0033.585.38.6869.342.330.8
2023-12-03 22:0033.086.58.1811.542.630.5
2023-12-03 21:0040.685.58.0846.445.634.0
2023-12-03 20:0041.194.08.7882.747.732.6
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: 19:07 04-12-2023