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Causeway Bay
Date TimeNO2O3SO2COPM10PM2.5
2023-01-30 06:0060.321.41.8690.035.321.2
2023-01-30 05:0057.430.11.5488.829.816.6
2023-01-30 04:00-28.3--32.617.9
2023-01-30 03:0064.324.52.6619.633.720.8
2023-01-30 02:0073.818.14.9655.838.421.8
2023-01-30 01:0088.610.05.5755.551.929.5
2023-01-30 00:00107.36.67.5968.760.632.4
2023-01-29 23:00114.95.97.8978.469.637.3
2023-01-29 22:00116.36.49.31,148.771.039.9
2023-01-29 21:00109.79.95.71,092.667.637.7
2023-01-29 20:00113.412.46.41,100.365.733.0
2023-01-29 19:00115.123.75.9915.868.835.2
2023-01-29 18:00128.212.710.5891.776.241.8
2023-01-29 17:00139.816.114.71,087.573.938.9
2023-01-29 16:00126.318.711.9979.772.739.2
2023-01-29 15:00134.614.312.8845.664.834.9
2023-01-29 14:00114.817.310.6751.364.232.6
2023-01-29 13:00109.215.48.7696.466.937.1
2023-01-29 12:0098.617.67.2667.760.531.5
2023-01-29 11:0090.121.26.7695.859.929.5
2023-01-29 10:0083.625.26.2652.270.630.9
2023-01-29 09:0065.838.63.7481.882.828.7
2023-01-29 08:0068.343.83.7565.474.927.8
2023-01-29 07:0052.351.82.4430.869.028.3
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 30-01-2023