World Air Quality Report has revealed alarming levels of pollution across Africa, with Ghana, Nigeria, Chad, and Rwanda ranking among the most polluted countries in the world.

The findings come from IQAir’s annual World Air Quality Report , which examined pollution levels in 138 countries using data from over 40,000 monitoring stations. The report found that Chad had the highest pollution level,

Chad and Bangladesh were the world's most polluted countries in 2024, with average smog levels more than 15 times higher than WHO guidelines, according to figures compiled by Swiss air quality monitoring firm IQAir. Only Australia, New Zealand, the Bahamas, Barbados, Grenada, Estonia and Iceland made the grade, IQAir said.