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Past 24 Hours Pollutant Concentration Summary

Yuen Long
Date TimeNO2O3SO2COPM10PM2.5
2017-11-21 21:0061.818.711.3749.082.432.8
2017-11-21 20:0068.722.411.0784.873.033.1
2017-11-21 19:0070.931.510.3738.477.430.8
2017-11-21 18:0074.748.78.5690.592.630.6
2017-11-21 17:0078.982.87.9605.980.332.2
2017-11-21 16:0077.671.07.9614.664.628.5
2017-11-21 15:0052.766.17.6498.355.520.4
2017-11-21 14:0041.560.77.6485.055.317.4
2017-11-21 13:0037.640.67.8496.753.816.8
2017-11-21 12:0034.527.77.9505.851.315.1
2017-11-21 11:0027.125.77.8463.743.715.0
2017-11-21 10:0024.520.07.7421.736.414.8
2017-11-21 09:0026.216.97.8410.824.014.4
2017-11-21 08:0024.516.57.5391.020.813.0
2017-11-21 07:0022.415.87.3376.922.010.9
2017-11-21 06:0022.015.37.5372.021.110.7
2017-11-21 05:0022.415.27.7393.118.99.7
2017-11-21 04:0020.517.17.8401.315.28.0
2017-11-21 03:00----15.57.6
2017-11-21 02:0023.116.06.6407.520.86.8
2017-11-21 01:0024.915.86.4407.718.46.8
2017-11-21 00:0027.814.46.2421.422.87.9
2017-11-20 23:0027.715.17.0428.023.38.9
2017-11-20 22:0030.115.27.0495.333.310.3
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:21:06 21-11-2017