World’s most polluted countries in 2024-25
May 16 , 2025
16 hrs 0 min
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- According to the 2024–25 IQAir report, South Asia continues to dominate the list of the world’s most polluted countries.
- Chad topped in the list and Bangladesh ranks second, Pakistan third, and India fifth.
- Nordic countries – including Iceland, Finland, and Sweden – feature prominently among the cleanest.
- The Bahamas topped the list of least polluted countries in 2024.
- In the Southern Hemisphere, New Zealand and Australia also rank among the least polluted countries.

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