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Date TimeNO2O3SO2COPM10PM2.5
2021-01-23 00:0056.423.34.4609.053.639.0
2021-01-22 23:0048.131.84.4580.242.030.9
2021-01-22 22:0044.331.94.3536.145.733.6
2021-01-22 21:0051.041.24.4533.649.233.7
2021-01-22 20:0057.055.74.5529.940.428.6
2021-01-22 19:0058.192.64.0790.638.127.5
2021-01-22 18:0025.5163.74.3509.741.728.4
2021-01-22 17:0020.7192.64.9419.849.834.2
2021-01-22 16:0023.6196.74.8454.656.237.8
2021-01-22 15:0028.8188.34.5498.771.646.1
2021-01-22 14:0045.5180.45.9569.095.464.1
2021-01-22 13:0077.9141.67.1735.9103.771.6
2021-01-22 12:0083.496.96.9759.894.567.1
2021-01-22 11:0077.174.97.0757.896.669.1
2021-01-22 10:0081.744.86.6815.5100.871.9
2021-01-22 09:0068.726.65.8879.376.756.8
2021-01-22 08:0044.915.44.0747.465.548.0
2021-01-22 07:0045.717.03.8637.845.232.1
2021-01-22 06:0023.630.33.1519.728.421.8
2021-01-22 05:0012.048.63.2451.322.817.5
2021-01-22 04:0011.344.32.9420.321.917.1
2021-01-22 03:0011.351.83.3409.722.819.5
2021-01-22 02:0010.542.83.4409.420.517.0
2021-01-22 01:009.048.33.3400.522.215.3
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: 00:07 23-01-2021