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Causeway Bay
Date TimeNO2O3SO2COPM10PM2.5
2021-06-21 06:0032.445.01.3489.422.913.1
2021-06-21 05:0032.245.11.6443.822.312.3
2021-06-21 04:00-45.9--23.012.9
2021-06-21 03:0021.250.01.2472.521.311.5
2021-06-21 02:0037.131.41.7649.822.512.3
2021-06-21 01:0036.037.51.7557.421.211.2
2021-06-21 00:0028.545.41.0463.622.011.8
2021-06-20 23:0032.644.51.3469.525.915.2
2021-06-20 22:0033.851.81.8472.033.021.1
2021-06-20 21:0068.819.83.1732.139.126.6
2021-06-20 20:0071.320.64.8707.235.824.1
2021-06-20 19:0061.524.63.3692.326.716.4
2021-06-20 18:0082.815.25.1641.724.414.8
2021-06-20 17:0090.223.54.9617.924.013.0
2021-06-20 16:0065.133.42.8625.831.619.1
2021-06-20 15:0075.528.43.1704.038.424.6
2021-06-20 14:0054.243.02.3618.538.223.5
2021-06-20 13:0072.429.02.9676.331.517.5
2021-06-20 12:0066.424.83.7622.529.717.5
2021-06-20 11:0071.325.13.7696.824.613.5
2021-06-20 10:0039.443.21.8462.526.515.9
2021-06-20 09:0052.629.82.0511.425.014.2
2021-06-20 08:0054.928.22.7515.222.412.9
2021-06-20 07:0054.123.72.2552.123.313.3
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 21-06-2021