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Tuen Mun
Date TimeNO2O3SO2COPM10PM2.5
2021-12-04 09:0045.856.07.7460.032.617.1
2021-12-04 08:0039.061.57.9450.831.017.0
2021-12-04 07:0018.980.08.8414.533.916.0
2021-12-04 06:0035.559.09.1488.534.019.9
2021-12-04 05:0033.359.69.5479.036.919.0
2021-12-04 04:0042.049.710.0499.737.020.0
2021-12-04 03:0049.541.810.2545.740.917.1
2021-12-04 02:0057.537.010.8560.742.021.8
2021-12-04 01:0068.127.310.5590.743.021.0
2021-12-04 00:0073.126.910.9602.451.726.9
2021-12-03 23:0099.610.312.71,020.457.828.9
2021-12-03 22:00109.74.313.41,313.158.029.0
2021-12-03 21:00107.64.411.51,028.961.925.1
2021-12-03 20:00120.74.112.41,051.760.126.9
2021-12-03 19:00119.75.09.7806.753.220.2
2021-12-03 18:0094.925.86.8547.956.917.1
2021-12-03 17:0057.166.66.5476.359.917.0
2021-12-03 16:0062.369.76.9525.761.918.9
2021-12-03 15:0057.881.06.9526.760.124.8
2021-12-03 14:0051.994.27.0534.955.221.1
2021-12-03 13:0052.475.97.0522.551.120.0
2021-12-03 12:0050.561.07.3502.954.917.1
2021-12-03 11:0064.644.38.3531.463.721.8
2021-12-03 10:0077.326.610.1585.859.221.0
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: 09:07 04-12-2021