Welcome to Environmental Protection Department Air Quality Health Index Website


Sources of Air Pollutants

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Sources of Air Pollutants

You can learn about a number of important pollutants, what they do and where they come from. Just click on the pollutant that interests you most from the list below.
Please click below to check the Hong Kong Air Quality Objectives for the above air pollutants.


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Last revision date:10:06 21-11-2017