Welcome to Environmental Protection Department Air Quality Health Index Website


Eastern
Date TimeNO2O3SO2COPM10PM2.5
2021-06-21 05:008.980.21.1-28.612.5
2021-06-21 04:009.874.71.2-28.011.6
2021-06-21 03:009.072.91.2-25.312.8
2021-06-21 02:009.271.21.2-22.311.7
2021-06-21 01:0011.266.10.8-27.312.8
2021-06-21 00:0014.166.20.9-32.316.3
2021-06-20 23:0018.866.41.2-29.216.4
2021-06-20 22:0014.075.50.8-28.113.1
2021-06-20 21:0016.365.81.2-24.29.9
2021-06-20 20:0017.065.11.2-21.97.1
2021-06-20 19:0018.763.41.2-22.38.3
2021-06-20 18:0017.265.01.5-17.59.9
2021-06-20 17:0015.772.01.5-20.211.1
2021-06-20 16:0019.869.41.6-25.416.5
2021-06-20 15:0021.972.81.2-22.512.1
2021-06-20 14:0020.075.81.3-22.98.4
2021-06-20 13:0015.676.31.3-17.03.7
2021-06-20 12:0020.068.01.5-15.04.1
2021-06-20 11:0019.865.41.4-16.810.7
2021-06-20 10:0018.566.51.7-19.213.9
2021-06-20 09:0014.167.01.0-22.114.9
2021-06-20 08:0020.858.51.5-25.011.5
2021-06-20 07:0019.360.01.5-27.09.5
2021-06-20 06:0011.669.51.1-23.08.5
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.

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Last revision date: 05:07 21-06-2021