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Past 24 Hours Pollutant Concentration Summary

Yuen Long
Date TimeNO2O3SO2COPM10PM2.5
2021-10-22 03:0014.940.19.0474.36.54.1
2021-10-22 02:0016.242.19.2475.58.25.1
2021-10-22 01:0019.343.59.3480.812.97.1
2021-10-22 00:0025.240.19.5484.115.27.1
2021-10-21 23:0030.637.39.7501.319.98.7
2021-10-21 22:0038.730.19.6550.626.512.7
2021-10-21 21:0044.822.09.6596.932.313.9
2021-10-21 20:0048.120.410.1611.529.611.3
2021-10-21 19:0051.525.19.7592.128.68.6
2021-10-21 18:0048.229.49.9580.526.17.4
2021-10-21 17:0042.134.29.9569.825.28.1
2021-10-21 16:0037.538.49.4567.729.29.0
2021-10-21 15:0036.638.410.0560.430.910.8
2021-10-21 14:0036.446.49.9573.835.813.6
2021-10-21 13:0045.441.79.8606.940.618.8
2021-10-21 12:0054.627.99.8622.432.313.9
2021-10-21 11:0060.630.510.3568.235.515.4
2021-10-21 10:0063.225.210.0599.135.816.7
2021-10-21 09:0056.320.89.9590.127.715.2
2021-10-21 08:0053.68.710.0710.127.315.7
2021-10-21 07:0049.11.59.5641.021.211.8
2021-10-21 06:0040.810.79.7550.917.99.1
2021-10-21 05:0040.06.99.9588.324.113.3
2021-10-21 04:0048.817.210.4585.623.312.2
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.