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Yuen Long
Date TimeNO2O3SO2COPM10PM2.5
2021-01-22 22:0095.40.88.01,302.350.922.8
2021-01-22 21:0097.30.88.01,175.947.822.2
2021-01-22 20:0097.12.68.21,001.836.922.7
2021-01-22 19:0089.18.88.3935.532.922.6
2021-01-22 18:0068.928.67.9807.327.618.6
2021-01-22 17:0084.837.89.9872.814.54.3
2021-01-22 16:0038.7123.57.8786.818.46.9
2021-01-22 15:0051.3100.88.3833.221.916.5
2021-01-22 14:0058.970.79.0836.834.422.2
2021-01-22 13:0070.856.910.3903.455.520.0
2021-01-22 12:0083.434.213.11,017.460.623.3
2021-01-22 11:0080.035.313.61,084.962.133.2
2021-01-22 10:0077.715.514.01,090.072.336.1
2021-01-22 09:0076.54.213.41,160.178.942.2
2021-01-22 08:0084.20.912.51,272.681.048.9
2021-01-22 07:0084.00.810.91,266.487.958.7
2021-01-22 06:0082.60.99.21,323.995.362.7
2021-01-22 05:0084.50.89.51,251.998.560.0
2021-01-22 04:0084.10.811.61,162.692.651.0
2021-01-22 03:0089.30.812.81,228.392.049.2
2021-01-22 02:0092.90.814.91,229.2118.168.2
2021-01-22 01:00----118.169.9
2021-01-22 00:00120.51.08.31,502.983.744.9
2021-01-21 23:00112.91.08.11,456.264.128.6
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: 22:07 22-01-2021