Mong Kok
Date TimeNO2O3SO2COPM10PM2.5
2021-09-22 18:0067.115.93.9772.512.17.9
2021-09-22 17:0062.517.84.1677.911.77.7
2021-09-22 16:0057.118.04.0646.413.39.2
2021-09-22 15:0056.722.14.0666.011.78.2
2021-09-22 14:0056.523.53.8651.49.26.7
2021-09-22 13:0059.618.54.5677.411.37.9
2021-09-22 12:0053.918.34.6617.811.97.7
2021-09-22 11:0053.110.65.5683.18.95.7
2021-09-22 10:0042.312.33.0646.25.73.1
2021-09-22 09:0025.713.02.4547.87.44.9
2021-09-22 08:0025.412.02.5553.57.54.7
2021-09-22 07:0027.410.62.3575.84.42.5
2021-09-22 06:0027.712.72.1594.23.61.6
2021-09-22 05:0029.214.42.3636.03.91.6
2021-09-22 04:0029.013.62.5667.23.61.6
2021-09-22 03:00-16.1--4.52.5
2021-09-22 02:0022.917.92.3584.86.64.0
2021-09-22 01:0038.311.73.3595.711.07.3
2021-09-22 00:0060.45.74.6729.315.811.4
2021-09-21 23:0084.11.813.8805.019.714.3
2021-09-21 22:0089.92.214.8893.021.816.1
2021-09-21 21:0093.92.415.2970.922.917.1
2021-09-21 20:0092.52.511.8978.221.214.5
2021-09-21 19:00101.42.610.7932.621.714.1
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: 18:07 22-09-2021