15 Countries with the Cleanest Air in the World in 2018

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13.  Denmark

Denmark’s capital, Copenhagen is the second city in Europe when it comes to air quality. It is mostly due to the bicycle riding culture, so this could be your next destination. The median concentration of PM2.5 is 10, the crude death number is 20, and it has a population of 5,733,551 citizens.

Countries with the Cleanest Air in the World in 2018

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