11 Worst Countries for Air Pollution

7. Mongolia

Average PM2.5 pollution: 64 ug/m3

Average PM10 pollution: 140 ug/m3

Mongolia’s territories cover nearly 604,000 square miles, the 19^th in the world, but the population barely hits the 3 million mark. Regardless, the cold winters that “plague” the country push the people to burn plenty of coal, which is a huge pollutant. The country’s capital city, Ulaanbaatar is one of the most polluted cities in the world, with the harmful dust rising to levels that are 6 to 7 times higher than the regular standards.