EPD

Back Home

Past 24 Hours Pollutant Concentration Summary

Tsuen Wan
Date TimeNO2O3SO2COPM10PM2.5
2022-05-27 06:0050.510.89.0496.818.910.6
2022-05-27 05:0048.111.49.8491.317.410.9
2022-05-27 04:0052.36.610.9492.414.59.3
2022-05-27 03:0050.511.010.4480.713.58.9
2022-05-27 02:0049.413.39.7493.310.16.4
2022-05-27 01:00----8.65.3
2022-05-27 00:0062.411.910.2492.210.27.2
2022-05-26 23:0071.86.611.5528.115.110.9
2022-05-26 22:0079.03.114.1605.717.311.6
2022-05-26 21:0062.311.68.6653.017.611.5
2022-05-26 20:0083.83.110.5679.414.68.0
2022-05-26 19:0073.811.29.2598.313.58.2
2022-05-26 18:0072.114.39.2635.114.79.9
2022-05-26 17:0046.727.86.7628.313.07.8
2022-05-26 16:0057.023.66.9608.214.58.9
2022-05-26 15:0068.323.38.9637.414.98.1
2022-05-26 14:0067.328.39.3604.814.48.1
2022-05-26 13:0055.130.59.3572.014.07.3
2022-05-26 12:0061.619.210.2594.417.19.6
2022-05-26 11:0067.88.610.7681.515.49.7
2022-05-26 10:0059.410.28.0657.58.95.8
2022-05-26 09:0047.514.57.1663.18.25.2
2022-05-26 08:0039.116.66.7634.49.55.5
2022-05-26 07:0030.18.06.5585.911.36.4
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.