28 Most Polluted Cities in the World

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13. Jaipur, West India
> Population: 3.5 million
> Average annual PM2.5 pollution per cubic meter: 104.6 micrograms
> Average annual PM10 pollution per cubic meter: 192.6 micrograms

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12. Greater Cairo, Egypt
> Population: 18.8 million
> Average annual PM2.5 pollution per cubic meter: 116.6 micrograms
> Average annual PM10 pollution per cubic meter: 284.0 micrograms

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11. Gurgaon, North India
> Population: 902,000
> Average annual PM2.5 pollution per cubic meter: 119.6 micrograms
> Average annual PM10 pollution per cubic meter: 124.3 micrograms

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10. Muzaffarpur, East India
> Population: 439,000
> Average annual PM2.5 pollution per cubic meter: 120.0 micrograms
> Average annual PM10 pollution per cubic meter: 220.9 micrograms

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9. Agra, North India
> Population: 2.0 million
> Average annual PM2.5 pollution per cubic meter: 131.4 micrograms
> Average annual PM10 pollution per cubic meter: 194.5 micrograms