Mong Kok
Date TimeNO2O3SO2COPM10PM2.5
2021-12-04 09:0067.842.94.0517.320.48.7
2021-12-04 08:0065.643.04.2517.820.410.9
2021-12-04 07:0033.170.23.4437.218.89.8
2021-12-04 06:0020.980.53.6435.417.68.8
2021-12-04 05:0020.782.53.8426.516.87.9
2021-12-04 04:0017.783.84.3429.118.68.9
2021-12-04 03:0019.980.54.5419.919.28.8
2021-12-04 02:0028.572.45.3460.025.511.6
2021-12-04 01:0047.556.55.8503.232.413.9
2021-12-04 00:0060.647.16.0533.333.815.1
2021-12-03 23:0050.855.64.5511.035.115.9
2021-12-03 22:0055.157.03.6512.533.114.7
2021-12-03 21:0087.334.04.7583.037.419.0
2021-12-03 20:00106.323.74.3672.535.515.4
2021-12-03 19:00108.822.44.6641.634.312.7
2021-12-03 18:00105.930.24.0583.236.613.6
2021-12-03 17:0098.636.24.8584.132.610.7
2021-12-03 16:0081.647.44.6541.733.712.3
2021-12-03 15:0071.564.73.9520.828.88.8
2021-12-03 14:0075.158.03.6504.528.610.7
2021-12-03 13:0057.963.93.2480.427.210.9
2021-12-03 12:0068.648.93.8526.627.911.9
2021-12-03 11:0046.162.33.2461.625.611.3
2021-12-03 10:0060.148.14.0484.825.311.0
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: 09:07 04-12-2021