Past 24 Hours Pollutant Concentration Summary

Central/Western
Date TimeNO2O3SO2COPM10PM2.5
2018-09-23 12:0028.418.88.9-9.04.6
2018-09-23 11:0022.219.610.4-11.47.1
2018-09-23 10:0022.315.44.9-12.18.1
2018-09-23 09:0023.711.04.9-6.84.3
2018-09-23 08:0010.119.23.6-7.25.3
2018-09-23 07:006.223.42.8-6.84.9
2018-09-23 06:0020.311.55.2-5.13.8
2018-09-23 05:0021.78.26.9-3.82.5
2018-09-23 04:0022.29.26.7-4.53.2
2018-09-23 03:0015.118.63.1-6.44.8
2018-09-23 02:0016.917.14.3-6.85.2
2018-09-23 01:0024.711.85.8-8.36.9
2018-09-23 00:0032.48.56.1-12.09.7
2018-09-22 23:0036.38.97.6-14.612.3
2018-09-22 22:0026.921.18.1-11.710.1
2018-09-22 21:0017.828.07.6-11.38.9
2018-09-22 20:0022.839.16.4-14.711.9
2018-09-22 19:0025.143.64.3-15.913.0
2018-09-22 18:0022.249.43.9-16.813.2
2018-09-22 17:0035.442.04.1-21.715.9
2018-09-22 16:0041.041.26.4-22.515.5
2018-09-22 15:0037.039.19.9-19.713.4
2018-09-22 14:0044.433.012.4-18.012.3
2018-09-22 13:0041.323.122.9-30.715.8
Remarks:

(1) NO2 - nitrogen dioxide, O3 - ozone,
     SO2 - sulphur dioxide, CO - carbon monoxide,
     PM10 - respirable suspended particulates,
     PM2.5 - fine suspended particulates

(2) Time shown is in Hong Kong time.

(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.

(5) Owing to failure of power supply, the operation of Tap Mun general station has been suspended until further notice. We apologize for any inconvenience caused.

(6) Owing to urgent repairing work, the monitoring of Eastern general station is temporarily suspended until further notice. Regret for any inconvenience caused.

Last revision date:12:07 23-09-2018