15 Most Polluted Countries in the World A quick note before we dive in: the fine particulate matter of the most polluted countries listed below is compared to the latest Global Air Quality Guidelines ...

Pakistan has been identified as the world's most polluted country by IQAir, with PM2. 5 concentrations nearly 13 times the ...

SINGAPORE, March 24 (Reuters) - Pakistan was ranked the world's smoggiest country in 2025, with concentrations of hazardous small particles known as PM2.5 up to 13 times ‌higher than the recommended ...

Some countries are known for having dangerously high pollution levels, poor sanitation, and large amounts of unmanaged waste. These problems are usually caused by overpopulation, industrial activity, ...