Southern
Date TimeNO2O3SO2COPM10PM2.5
2021-09-21 21:0010.328.53.9377.116.11.3
2021-09-21 20:0010.929.23.4362.011.16.1
2021-09-21 19:0011.032.24.0382.610.410.1
2021-09-21 18:0023.358.55.2380.213.312.3
2021-09-21 17:0024.559.25.6368.513.210.9
2021-09-21 16:0027.153.15.3376.99.75.3
2021-09-21 15:0031.732.84.0400.47.5-
2021-09-21 14:0020.755.33.5380.38.73.2
2021-09-21 13:0019.352.95.3348.311.74.2
2021-09-21 12:0018.750.45.7397.713.34.0
2021-09-21 11:0025.030.58.1419.917.78.1
2021-09-21 10:0031.814.311.2443.919.69.1
2021-09-21 09:0036.99.48.2529.810.04.6
2021-09-21 08:0017.010.35.2502.25.81.7
2021-09-21 07:0012.78.84.6403.411.36.6
2021-09-21 06:007.511.14.5357.915.98.8
2021-09-21 05:004.713.64.3350.214.32.7
2021-09-21 04:004.216.54.3349.413.1-
2021-09-21 03:005.118.64.5358.27.24.1
2021-09-21 02:003.617.64.2357.33.3-
2021-09-21 01:004.518.84.0373.011.45.4
2021-09-21 00:006.918.34.0379.915.64.3
2021-09-20 23:009.615.14.2381.74.2-
2021-09-20 22:008.022.14.4387.4-1.1
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: 21:07 21-09-2021