Yuen Long
Date TimeNO2O3SO2COPM10PM2.5
2021-09-22 19:0027.228.19.0691.26.96.1
2021-09-22 18:0022.934.89.2631.86.04.2
2021-09-22 17:0025.349.39.2624.711.07.4
2021-09-22 16:0027.154.69.0644.412.77.5
2021-09-22 15:0032.545.98.8655.910.97.4
2021-09-22 14:0028.147.88.9641.48.37.6
2021-09-22 13:0018.954.78.7618.94.53.8
2021-09-22 12:0015.049.38.6612.45.94.4
2021-09-22 11:0017.138.18.8663.910.78.6
2021-09-22 10:0018.027.89.3657.613.89.5
2021-09-22 09:0026.917.19.9747.116.811.0
2021-09-22 08:0031.45.39.6901.517.910.0
2021-09-22 07:0029.11.09.6898.219.010.5
2021-09-22 06:0028.00.89.4918.016.37.8
2021-09-22 05:0031.00.89.3958.119.611.3
2021-09-22 04:0037.70.89.51,066.421.013.0
2021-09-22 03:0043.00.810.01,162.720.611.8
2021-09-22 02:0044.60.89.91,070.519.111.9
2021-09-22 01:0047.90.910.21,158.527.920.4
2021-09-22 00:0050.45.810.81,317.425.319.9
2021-09-21 23:0052.37.111.31,180.122.417.8
2021-09-21 22:0049.713.410.81,013.419.515.8
2021-09-21 21:0052.49.410.61,073.716.612.3
2021-09-21 20:0062.111.510.5836.813.19.7
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: 19:07 22-09-2021