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Tuen Mun
Date TimeNO2O3SO2COPM10PM2.5
2023-09-23 12:0031.049.52.7330.921.716.8
2023-09-23 11:0038.746.32.9380.618.112.2
2023-09-23 10:0030.046.32.8384.119.913.0
2023-09-23 09:0031.640.82.8423.927.716.9
2023-09-23 08:0038.932.92.7412.422.211.2
2023-09-23 07:0021.252.42.2336.220.112.0
2023-09-23 06:0028.940.62.2373.818.112.0
2023-09-23 05:0018.356.12.1347.116.19.1
2023-09-23 04:0026.749.62.2364.818.918.7
2023-09-23 03:0040.137.62.2448.124.820.9
2023-09-23 02:0041.546.12.3462.924.017.1
2023-09-23 01:0030.975.22.6411.533.719.9
2023-09-23 00:0054.049.42.5485.527.217.1
2023-09-22 23:0037.574.62.4419.825.1-
2023-09-22 22:0030.891.42.3440.734.722.1
2023-09-22 21:0053.864.72.8488.633.125.9
2023-09-22 20:0082.641.03.3498.034.921.2
2023-09-22 19:0092.532.54.1493.530.220.0
2023-09-22 18:0086.439.43.6482.431.924.8
2023-09-22 17:0093.449.83.0517.045.525.0
2023-09-22 16:0071.993.93.9443.138.322.1
2023-09-22 15:0060.895.65.1400.028.318.1
2023-09-22 14:0036.4106.34.4357.623.215.1
2023-09-22 13:0035.6101.74.5333.735.617.9
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.

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Last revision date: 12:07 23-09-2023