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Tsuen Wan
Date TimeNO2O3SO2COPM10PM2.5
2021-10-22 05:0011.336.34.1380.41.7-
2021-10-22 04:0011.637.93.9388.83.23.1
2021-10-22 03:0013.538.33.9403.15.14.9
2021-10-22 02:0018.638.64.1420.88.76.0
2021-10-22 01:0024.536.94.3425.26.54.4
2021-10-22 00:0030.836.34.3451.69.25.5
2021-10-21 23:0033.736.44.4467.910.66.4
2021-10-21 22:0034.737.14.3474.114.28.5
2021-10-21 21:0039.934.14.5511.417.39.9
2021-10-21 20:0047.130.24.8533.218.610.3
2021-10-21 19:0048.629.34.8492.617.79.0
2021-10-21 18:0054.925.34.9495.218.78.4
2021-10-21 17:0041.532.94.9450.821.98.4
2021-10-21 16:0040.432.34.8454.426.010.5
2021-10-21 15:0039.835.45.0452.931.513.5
2021-10-21 14:0047.336.24.8436.532.316.7
2021-10-21 13:0046.135.24.9433.622.012.7
2021-10-21 12:0064.423.26.1410.618.610.5
2021-10-21 11:0043.732.55.1453.814.78.7
2021-10-21 10:0050.623.76.1444.416.110.7
2021-10-21 09:0049.813.85.3510.612.98.2
2021-10-21 08:0048.38.54.7477.611.68.0
2021-10-21 07:0031.716.34.4395.08.94.8
2021-10-21 06:0015.032.04.2332.111.06.2
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