The 30 Most Polluted Places on Earth

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5. Patna, East India
> Population: 2.2 million
> Average annual PM2.5 pollution per cubic meter: 144.3 micrograms
> Average annual PM10 pollution per cubic meter: 265.7 micrograms

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4. Varanasi, North India
> Population: 1.5 million
> Average annual PM2.5 pollution per cubic meter: 146.3 micrograms
> Average annual PM10 pollution per cubic meter: 260.1 micrograms

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3. Gaya, East India
> Population: 508,000
> Average annual PM2.5 pollution per cubic meter: 149.1 micrograms
> Average annual PM10 pollution per cubic meter: 274.6 micrograms

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2. Faridabad, North India
> Population: 1.8 million
> Average annual PM2.5 pollution per cubic meter: 171.5 micrograms
> Average annual PM10 pollution per cubic meter: 315.9 micrograms

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1. Kanpur, North India
> Population: 3.0 million
> Average annual PM2.5 pollution per cubic meter: 173.0 micrograms
> Average annual PM10 pollution per cubic meter: 318.5 micrograms