Tuen Mun
Date TimeNO2O3SO2COPM10PM2.5
2021-09-21 21:0037.831.25.5668.713.09.0
2021-09-21 20:0025.748.65.2551.013.04.1
2021-09-21 19:0037.436.95.7537.07.16.0
2021-09-21 18:0046.428.85.9556.016.89.0
2021-09-21 17:0059.023.35.8589.722.912.9
2021-09-21 16:0065.919.25.5618.418.110.1
2021-09-21 15:0045.935.15.8559.821.913.0
2021-09-21 14:0053.146.27.2599.033.817.9
2021-09-21 13:0048.367.76.4523.323.26.2
2021-09-21 12:0026.144.64.9492.515.17.0
2021-09-21 11:0033.429.34.8548.120.96.0
2021-09-21 10:0036.716.65.2585.810.26.0
2021-09-21 09:0026.115.25.3558.111.05.0
2021-09-21 08:0029.68.55.7663.714.06.0
2021-09-21 07:0027.76.05.0598.712.07.0
2021-09-21 06:0026.46.34.4612.012.04.1
2021-09-21 05:0027.57.34.5685.79.14.0
2021-09-21 04:0032.24.94.8636.210.07.0
2021-09-21 03:0035.44.85.0638.115.97.0
2021-09-21 02:0039.44.94.8628.714.010.9
2021-09-21 01:0042.86.14.6600.217.911.0
2021-09-21 00:0045.15.16.6624.216.09.0
2021-09-20 23:0039.19.26.2523.117.910.0
2021-09-20 22:0042.79.35.4503.013.112.0
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: 21:07 21-09-2021