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Mong Kok
Date TimeNO2O3SO2COPM10PM2.5
2021-10-22 03:00-40.5--5.24.1
2021-10-22 02:0024.539.70.0508.510.16.1
2021-10-22 01:0033.535.50.1555.514.37.5
2021-10-22 00:0044.330.90.5595.814.77.8
2021-10-21 23:0050.030.20.8591.914.37.5
2021-10-21 22:0040.941.80.6573.717.08.3
2021-10-21 21:0051.931.41.1628.920.810.8
2021-10-21 20:0058.627.21.2654.321.410.3
2021-10-21 19:0056.928.51.1622.622.59.8
2021-10-21 18:0059.724.91.3626.426.111.4
2021-10-21 17:0064.622.51.2625.932.212.8
2021-10-21 16:0060.1-0.7618.038.115.3
2021-10-21 15:0064.7-1.0631.534.113.8
2021-10-21 14:0067.9-1.1636.435.618.1
2021-10-21 13:0091.0-4.6787.034.118.6
2021-10-21 12:0098.2-4.4674.928.512.9
2021-10-21 11:0092.18.52.7683.330.514.3
2021-10-21 10:0094.25.83.3672.327.614.4
2021-10-21 09:0097.24.74.0703.622.511.4
2021-10-21 08:0064.526.00.5539.520.410.5
2021-10-21 07:0053.931.20.3508.118.79.7
2021-10-21 06:0037.843.60.1496.416.57.5
2021-10-21 05:0034.150.00.1462.914.95.9
2021-10-21 04:0030.955.70.2468.416.76.7
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: 03:07 22-10-2021