Welcome to Environmental Protection Department Air Quality Health Index Website


Past 24 Hours Pollutant Concentration Summary

Central
Date TimeNO2O3SO2COPM10PM2.5
2017-11-23 10:00119.24.910.7815.844.932.1
2017-11-23 09:00114.33.010.7848.345.633.8
2017-11-23 08:0087.04.58.9744.144.533.5
2017-11-23 07:0072.38.56.5669.639.831.5
2017-11-23 06:0057.516.75.6623.033.126.8
2017-11-23 05:0048.322.94.6616.228.422.2
2017-11-23 04:0045.026.34.7625.429.421.5
2017-11-23 03:0053.016.03.9719.724.118.3
2017-11-23 02:0052.517.93.8740.626.317.7
2017-11-23 01:0066.210.34.7741.332.520.0
2017-11-23 00:0079.15.55.8820.533.719.4
2017-11-22 23:0078.84.66.7868.231.317.7
2017-11-22 22:0091.14.17.2971.341.123.2
2017-11-22 21:00104.03.59.21,043.547.326.8
2017-11-22 20:00129.72.515.01,084.252.126.4
2017-11-22 19:00138.91.615.51,141.555.725.4
2017-11-22 18:00158.92.314.31,075.755.628.3
2017-11-22 17:00151.33.213.01,008.858.030.3
2017-11-22 16:00161.64.713.31,061.855.530.0
2017-11-22 15:00166.611.412.91,104.862.336.0
2017-11-22 14:00----64.937.0
2017-11-22 13:00----46.923.2
2017-11-22 12:00----32.313.9
2017-11-22 11:00----27.212.7
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.

Mobile Version | Desktop Version
Last revision date:10:06 23-11-2017