10 Countries With the Worst Air Pollution

In this article, we will look into the 10 countries with the worst air pollution. If you want to read our detailed analysis, you can go directly to the 30 Countries With the Worst Air Pollution.

10. Congo

Annual Average PM2.5 Concentration (2023): 40.8 μg/m³

Congo is ranked among the countries with the worst air pollution. As of 2023, the country has an annual average PM2.5 concentration of 40.8 μg/m³, 8.2 times higher than the WHO guidelines about particulate matter concentration in the air.