Causeway Bay
Date TimeNO2O3SO2COPM10PM2.5
2021-09-22 19:0045.822.94.2774.828.618.8
2021-09-22 18:0050.721.24.8677.825.116.4
2021-09-22 17:0044.925.14.8620.622.213.0
2021-09-22 16:0049.419.15.0704.625.015.2
2021-09-22 15:0056.019.15.2679.627.616.9
2021-09-22 14:0049.023.15.5715.723.214.7
2021-09-22 13:0049.121.55.8720.317.69.8
2021-09-22 12:0046.117.75.7676.218.69.6
2021-09-22 11:0040.811.76.0743.618.710.7
2021-09-22 10:0042.38.77.4751.319.912.2
2021-09-22 09:0049.95.810.1826.227.617.3
2021-09-22 08:0041.64.78.3917.825.616.0
2021-09-22 07:0033.14.26.4829.717.410.6
2021-09-22 06:0029.34.85.6720.111.36.4
2021-09-22 05:0026.96.95.1630.89.24.4
2021-09-22 04:0027.45.35.2670.59.14.4
2021-09-22 03:0027.94.95.2756.710.06.1
2021-09-22 02:0029.95.65.6730.814.88.4
2021-09-22 01:0043.73.37.0743.923.615.5
2021-09-22 00:0057.23.27.6750.826.015.9
2021-09-21 23:0067.43.09.6992.934.723.4
2021-09-21 22:0085.44.212.11,358.640.529.2
2021-09-21 21:0074.34.39.01,265.250.236.0
2021-09-21 20:0081.76.69.71,235.248.432.9
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: 19:07 22-09-2021