List of countries by air pollution
Air pollution can affect nearly every organ and system of the body, negatively affecting nature and humans alike. Air pollution is a particularly big problem in emerging and developing countries , where global environmental standards often cannot be met.
Asian countries dominate the list of most polluted countries with Pakistan, Mongolia, Afghanistan, and India standing amongst the top five, signifying a pressing need for adopting cleaner fuels and industrial processes, and improving waste management. The Middle East does not lag far behind in air pollution levels.
Most Polluted Countries
Compare air pollution levels by country using IQAir air quality data, PM2.5 insights, and global ranking information.
Discover the most polluted and least polluted countries in the world, ranked by PM2.5 levels, with detailed insights and global pollution trends.
Last year's World Air Quality Report incorporated data from 8,954 cities in 138 countries , regions, and territories. The current Report expanded to cover 9,446 cities in 143 countries , regions, and territories. An increase in 2025 data contributions from West Asia, notably the inclusion of Iran, Syria, and Jordan, resulted in a 33% increase in the number of cities covered. While this region ...
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Most Polluted Countries in 2024 By PM2.5 Levels - Visual Nerd. It gives the article a little more context before the image collection begins.
Most Polluted Countries 2025 - Most Polluted Countries - QNANCK. It gives the article a little more context before the image collection begins.
New report reveals 2024's most polluted countries and cities. The extra context helps the page feel more useful without forcing the same phrase repeatedly.
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