Yuen Long
Date TimeNO2O3SO2COPM10PM2.5
2021-06-20 05:007.462.47.9545.921.010.8
2021-06-20 04:008.459.78.0540.719.510.7
2021-06-20 03:0014.844.07.9569.818.310.0
2021-06-20 02:0018.239.48.0575.817.99.0
2021-06-20 01:0014.742.08.0559.617.57.7
2021-06-20 00:0015.741.08.0562.219.89.7
2021-06-19 23:0019.438.17.9565.718.89.0
2021-06-19 22:0019.139.58.1604.217.78.4
2021-06-19 21:0023.940.88.0679.017.58.0
2021-06-19 20:0026.739.98.0515.018.69.1
2021-06-19 19:0023.553.98.0487.119.410.4
2021-06-19 18:0023.862.18.0478.221.111.6
2021-06-19 17:0019.470.78.0443.922.912.8
2021-06-19 16:0019.173.98.0543.825.610.3
2021-06-19 15:0015.472.57.9594.531.914.9
2021-06-19 14:0017.170.88.0581.020.37.6
2021-06-19 13:0012.167.97.9548.722.89.7
2021-06-19 12:0013.669.27.9514.823.812.7
2021-06-19 11:0014.263.37.9511.721.911.5
2021-06-19 10:0017.256.97.9531.018.69.1
2021-06-19 09:0015.355.78.1542.219.110.2
2021-06-19 08:0014.552.67.9539.118.19.4
2021-06-19 07:0011.453.27.9546.718.19.0
2021-06-19 06:008.555.88.0526.520.311.8
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.

Last revision date: 05:07 20-06-2021