Tsuen Wan
Date TimeNO2O3SO2COPM10PM2.5
2021-09-21 22:0046.12.95.5623.622.915.2
2021-09-21 21:0051.11.95.1684.321.614.3
2021-09-21 20:0054.21.15.3672.516.811.0
2021-09-21 19:0052.14.35.6567.314.310.2
2021-09-21 18:0073.97.87.7564.917.211.8
2021-09-21 17:0088.38.67.4760.611.66.4
2021-09-21 16:0051.318.85.1515.313.67.9
2021-09-21 15:0044.818.74.5459.59.06.1
2021-09-21 14:0050.023.34.6487.16.14.4
2021-09-21 13:0050.020.16.8438.7--
2021-09-21 12:0054.213.16.9513.8--
2021-09-21 11:0040.211.06.3442.7--
2021-09-21 10:0037.89.45.6468.07.25.2
2021-09-21 09:0025.910.25.0495.99.86.5
2021-09-21 08:0022.34.45.0561.810.35.3
2021-09-21 07:0016.64.54.2429.510.64.3
2021-09-21 06:0011.48.14.2364.311.75.2
2021-09-21 05:0010.111.54.2344.112.76.2
2021-09-21 04:0010.812.14.3365.510.03.8
2021-09-21 03:0013.39.94.6357.410.24.4
2021-09-21 02:0022.25.34.5422.09.64.2
2021-09-21 01:00----10.24.6
2021-09-21 00:0030.23.64.8502.712.36.0
2021-09-20 23:0039.02.94.9564.313.77.0
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: 22:07 21-09-2021