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Causeway Bay
Date TimeNO2O3SO2COPM10PM2.5
2021-12-04 09:00114.76.49.9710.436.918.0
2021-12-04 08:0091.516.47.21,210.334.120.2
2021-12-04 07:0074.326.75.3413.825.616.4
2021-12-04 06:0034.057.63.41,030.717.510.0
2021-12-04 05:0037.455.14.3368.419.912.4
2021-12-04 04:00-54.8--19.28.5
2021-12-04 03:0048.244.25.1313.627.112.8
2021-12-04 02:0079.913.76.6508.834.418.4
2021-12-04 01:0093.64.88.1606.638.117.2
2021-12-04 00:00102.85.310.7539.343.419.8
2021-12-03 23:0097.29.510.2561.048.927.2
2021-12-03 22:0096.110.78.9582.640.020.1
2021-12-03 21:00101.413.48.7680.349.526.3
2021-12-03 20:00118.87.713.0708.952.728.8
2021-12-03 19:00120.29.111.3762.756.726.2
2021-12-03 18:00126.99.09.8630.852.821.1
2021-12-03 17:00113.28.87.9453.551.821.9
2021-12-03 16:00126.210.79.9597.048.319.7
2021-12-03 15:00133.212.89.3455.339.314.1
2021-12-03 14:00120.214.77.9461.832.611.9
2021-12-03 13:00114.216.18.0444.934.713.1
2021-12-03 12:00115.811.18.5436.339.015.2
2021-12-03 11:00108.012.07.4442.838.011.9
2021-12-03 10:00111.08.38.5631.548.024.4
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