5 Most Polluted Countries in the World

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In this article we are going to list the 5 most polluted countries in the world. For a detailed coverage of this topic and a more comprehensive list please take a look at the 25 most polluted countries in the world.

5. Oman

Air quality index score: 146

The most polluted country in the Middle East, Oman’s pollution is derived from the production of crude oil as well as its refining, in addition to vehicle emissions.

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