Causeway Bay
Date TimeNO2O3SO2COPM10PM2.5
2023-09-23 06:0026.755.12.8361.522.817.3
2023-09-23 05:00-57.1--16.712.7
2023-09-23 04:0015.765.21.7230.822.216.4
2023-09-23 03:0023.968.11.8240.426.219.9
2023-09-23 02:0021.674.41.9271.132.824.2
2023-09-23 01:0031.875.71.8312.842.431.1
2023-09-23 00:0036.480.42.3320.639.027.0
2023-09-22 23:0065.957.02.9365.438.027.5
2023-09-22 22:0072.843.93.1474.345.833.3
2023-09-22 21:0059.255.42.6453.752.938.6
2023-09-22 20:0058.259.42.5458.141.631.0
2023-09-22 19:0068.656.72.4497.367.147.4
2023-09-22 18:0072.467.42.6434.057.738.2
2023-09-22 17:0070.363.92.7363.546.228.3
2023-09-22 16:0096.951.93.0403.244.327.8
2023-09-22 15:00103.236.34.8461.343.027.9
2023-09-22 14:00114.926.15.4530.936.925.6
2023-09-22 13:00101.733.35.0497.438.224.6
2023-09-22 12:0096.132.05.6418.946.929.9
2023-09-22 11:00124.610.29.1733.347.131.1
2023-09-22 10:00100.410.16.5703.950.333.7
2023-09-22 09:0093.98.86.4731.348.233.9
2023-09-22 08:0097.68.25.7699.645.730.7
2023-09-22 07:0080.014.32.7484.834.322.9
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: 06:07 23-09-2023