10 Most Polluted Countries in the World Heading into 2024

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3. Pakistan

Score: 7

Pakistan is the third most polluted country in the world. This is due to a high concentration of pollutants in air. According to IQAir, the country has a PM2.5 concentration of 70.9 μg/m³. One of its largest cities, Lahore, was declared to be the most polluted city in the world in 2022. The country’s water bodies also exhibit high levels of pollution. The country has an EPI score of 17.4 out of 100 for drinking water and sanitation.

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