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 ...

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, ...

NEW DELHI: India was the fifth most polluted country in the world in terms of air quality, with Byrnihat in Meghalaya being the most polluted metropolitan area globally last year, according to 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 ...

New data shows global air quality progress stalling as wildfire smoke and climate change intensify global air pollution. Despite some regional improvements, major data gaps remain, with only a ...