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Causeway Bay
Date TimeNO2O3SO2COPM10PM2.5
2023-12-04 18:00124.441.76.6967.880.355.5
2023-12-04 17:00165.318.010.81,065.298.266.4
2023-12-04 16:00173.011.211.21,114.889.959.7
2023-12-04 15:00-13.5--83.454.1
2023-12-04 14:00143.011.69.7943.973.348.4
2023-12-04 13:00124.412.710.0915.273.049.4
2023-12-04 12:00111.910.48.4878.669.446.4
2023-12-04 11:0097.512.06.6936.273.549.9
2023-12-04 10:0087.412.07.1948.367.245.4
2023-12-04 09:0075.811.85.9806.765.543.9
2023-12-04 08:0064.820.14.5613.061.039.1
2023-12-04 07:0048.436.63.2508.548.328.8
2023-12-04 06:0026.466.02.7450.247.629.5
2023-12-04 05:00-74.5--47.429.8
2023-12-04 04:0030.474.53.4426.742.125.5
2023-12-04 03:0031.377.42.8467.435.521.1
2023-12-04 02:0030.280.62.8387.137.722.8
2023-12-04 01:0063.650.14.0555.243.629.3
2023-12-04 00:0065.152.13.6729.753.538.4
2023-12-03 23:0074.453.85.1674.756.038.5
2023-12-03 22:00106.936.46.7879.561.843.8
2023-12-03 21:0078.552.65.2856.058.139.1
2023-12-03 20:0075.959.05.9897.356.238.4
2023-12-03 19:0065.371.15.0847.756.339.1
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 04-12-2023