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How does Sydney's air quality compare to Mongolia?

Mongolia's captial Ulaanbaatar has some of the most polluted air in the world. But how does the quality in Sydney compare?

Dateline: How does Sydney's air compare to Mongolia's?

How does the air Sydney breathes compare to one of the most polluted cities in the world?

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Published 18 September 2018 9:36am

Updated 18 September 2018 9:45am

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