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Date TimeNO2O3SO2COPM10PM2.5
2021-12-04 09:0013.983.310.5426.423.011.4
2021-12-04 08:0014.479.610.5421.019.89.4
2021-12-04 07:0012.380.810.7411.418.68.7
2021-12-04 06:0011.181.511.7411.020.611.2
2021-12-04 05:0010.285.112.5406.322.211.8
2021-12-04 04:009.686.812.1411.721.811.6
2021-12-04 03:0010.286.611.5422.821.310.9
2021-12-04 02:0010.487.811.8424.224.712.3
2021-12-04 01:0013.282.912.1446.629.114.7
2021-12-04 00:0018.779.512.4441.432.316.0
2021-12-03 23:0015.385.211.4438.526.910.7
2021-12-03 22:0013.288.19.2429.424.311.2
2021-12-03 21:0013.190.19.1427.432.615.0
2021-12-03 20:0018.580.28.6433.330.611.2
2021-12-03 19:0015.095.88.7419.330.09.1
2021-12-03 18:0013.6103.78.6413.526.97.3
2021-12-03 17:009.9110.59.0403.131.09.6
2021-12-03 16:0010.9109.09.8407.632.310.7
2021-12-03 15:0010.0109.09.7421.531.512.2
2021-12-03 14:0010.2111.09.5421.631.711.5
2021-12-03 13:0013.4105.69.5413.536.614.4
2021-12-03 12:0016.794.19.5420.835.214.2
2021-12-03 11:0016.584.610.2423.238.016.8
2021-12-03 10:0015.379.510.9426.030.112.7
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: 09:07 04-12-2021