28 Most Polluted Cities in the World

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Source: Ian Waldie / Getty Images

18. Ali Subah Al-Salem, Kuwait
> Population: 42,000
> Average annual PM2.5 pollution per cubic meter: 93.8 micrograms
> Average annual PM10 pollution per cubic meter: 198.1 micrograms

Source: MIKParadox / Wikimedia Commons

17. Narayangonj, Bangladesh
> Population: 543,000
> Average annual PM2.5 pollution per cubic meter: 94.2 micrograms
> Average annual PM10 pollution per cubic meter: 205.0 micrograms

Source: athomson / Flickr

16. Jodhpur, West India
> Population: 1.3 million
> Average annual PM2.5 pollution per cubic meter: 97.8 micrograms
> Average annual PM10 pollution per cubic meter: 180.2 micrograms

Source: Harvinder Chandigarh / Wikimedia Commons

15. Patiala, North India
> Population: 510,000
> Average annual PM2.5 pollution per cubic meter: 101.2 micrograms
> Average annual PM10 pollution per cubic meter: 183.7 micrograms

Source: Adrian Wojcik / Getty Images

14. Delta Region, Egypt
> Population: 7.9 million
> Average annual PM2.5 pollution per cubic meter: 102.2 micrograms
> Average annual PM10 pollution per cubic meter: 249.0 micrograms