Which nations produce more of the world's pollution?

Mongolia is the world’s most polluted country and also home to one of the world’s most polluted cities - Ulaanbaatar. Mongolia is the world’s most polluted country and also home to one of the world’s most polluted cities - Ulaanbaatar.

Botswana ... Wild fires and pollution from the mineral industry are the main sources of the country’s poor air quality. Copper smelting for example has been blamed for sulfur dioxide and nickel emissions.