Welcome to Environmental Protection Department Air Quality Health Index Website


Past 24 Hours Pollutant Concentration Summary

Tung Chung
Date TimeNO2O3SO2COPM10PM2.5
2017-11-23 01:0037.515.95.5704.853.830.0
2017-11-23 00:0041.911.66.4751.356.029.6
2017-11-22 23:0046.98.37.6808.549.028.3
2017-11-22 22:0050.112.08.9826.041.624.5
2017-11-22 21:0048.718.79.8808.943.625.9
2017-11-22 20:0051.022.211.2846.639.821.2
2017-11-22 19:0052.028.411.4801.448.224.5
2017-11-22 18:0068.329.911.5781.755.229.6
2017-11-22 17:0090.826.713.3794.751.725.6
2017-11-22 16:0075.244.010.9761.453.324.6
2017-11-22 15:0069.950.912.5750.058.926.6
2017-11-22 14:0067.957.814.0739.365.933.1
2017-11-22 13:0062.751.112.9750.668.635.2
2017-11-22 12:0056.127.713.1735.061.832.8
2017-11-22 11:0048.513.816.9758.562.837.7
2017-11-22 10:0046.18.619.5776.453.933.1
2017-11-22 09:0039.77.310.8738.648.332.0
2017-11-22 08:0040.75.910.2745.848.231.9
2017-11-22 07:0043.34.112.8721.551.330.5
2017-11-22 06:0045.03.913.9763.654.032.9
2017-11-22 05:0045.24.013.9745.849.529.1
2017-11-22 04:0048.53.915.4772.359.533.2
2017-11-22 03:0056.53.915.3851.865.237.3
2017-11-22 02:0058.13.913.1834.758.436.9
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:01:06 23-11-2017