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Tuen Mun
Date TimeNO2O3SO2COPM10PM2.5
2021-10-22 05:0011.243.53.7567.87.07.0
2021-10-22 04:0010.244.74.0547.78.97.0
2021-10-22 03:0010.847.43.8574.610.98.9
2021-10-22 02:0014.945.53.8589.212.910.9
2021-10-22 01:0017.346.43.9591.420.710.0
2021-10-22 00:0021.843.64.3597.228.715.8
2021-10-21 23:0033.231.14.7654.030.017.9
2021-10-21 22:0040.818.74.7749.141.618.0
2021-10-21 21:0045.416.24.6816.941.017.0
2021-10-21 20:0049.813.74.9815.441.016.0
2021-10-21 19:0055.510.85.2813.342.015.0
2021-10-21 18:0060.415.45.4779.036.211.1
2021-10-21 17:0048.826.45.0710.232.112.0
2021-10-21 16:0039.036.64.9652.241.713.9
2021-10-21 15:0042.035.15.3682.343.912.1
2021-10-21 14:0034.052.05.0648.446.919.7
2021-10-21 13:0047.330.25.2761.956.727.7
2021-10-21 12:0060.033.19.7788.129.017.4
2021-10-21 11:0051.430.66.3583.827.011.2
2021-10-21 10:0053.823.95.1641.728.014.9
2021-10-21 09:0061.313.65.9710.929.015.0
2021-10-21 08:0060.96.85.9801.627.115.0
2021-10-21 07:0051.09.54.9714.221.28.2
2021-10-21 06:0037.226.24.8639.021.09.9
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: 05:07 22-10-2021