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25 most polluted cities in the world

25 most polluted cities in the world
24/7 Wall St. reviewed the average annual concentration of PM2.5, a specific type air pollution, per cubic meter in nearly 3,000 cities around the globe to identify the world’s most polluted cities. Click through to learn more:

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24/7 Wall St. reviewed the average annual concentration of PM2.5, a specific type air pollution, per cubic meter in nearly 3,000 cities around the globe to identify the world’s most polluted cities. Click through to learn more:

Cn0ra / iStock

25. Zhengzhou, China • Population: 4.5 million • Average PM2.5 pollution per cubic meter: 86 micrograms • Average PM10 pollution per cubic meter: 171 micrograms

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25. Zhengzhou, China • Population: 4.5 million • Average PM2.5 pollution per cubic meter: 86 micrograms • Average PM10 pollution per cubic meter: 171 micrograms

Public Domain / Wikimedia Commons

24. Kabul, Afghanistan • Population: 4.8 million • Average PM2.5 pollution per cubic meter: 86 micrograms • Average PM10 pollution per cubic meter: 260 micrograms   

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24. Kabul, Afghanistan • Population: 4.8 million • Average PM2.5 pollution per cubic meter: 86 micrograms • Average PM10 pollution per cubic meter: 260 micrograms   

Sven Dirks, Wien / Wikimedia Commons

23. Tianjin, China • Population: 11.6 million • Average PM2.5 pollution per cubic meter: 87 micrograms • Average PM10 pollution per cubic meter: 150 micrograms  

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23. Tianjin, China • Population: 11.6 million • Average PM2.5 pollution per cubic meter: 87 micrograms • Average PM10 pollution per cubic meter: 150 micrograms  

ASDFGH / Wikimedia Commons

22. Cangzhou, China • Population: 537,000 • Average PM2.5 pollution per cubic meter: 88 micrograms • Average PM10 pollution per cubic meter: 133 micrograms   

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22. Cangzhou, China • Population: 537,000 • Average PM2.5 pollution per cubic meter: 88 micrograms • Average PM10 pollution per cubic meter: 133 micrograms   

chuyu / iStock

21. Karachi, Pakistan • Population: 17.1 million • Average PM2.5 pollution per cubic meter: 88 micrograms • Average PM10 pollution per cubic meter: 290 micrograms  

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21. Karachi, Pakistan • Population: 17.1 million • Average PM2.5 pollution per cubic meter: 88 micrograms • Average PM10 pollution per cubic meter: 290 micrograms  

Greg / Wikimedia Commons

20. Gazipur, Bangladesh • Population: 1.2 million • Average PM2.5 pollution per cubic meter: 89 micrograms • Average PM10 pollution per cubic meter: 155 micrograms 

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20. Gazipur, Bangladesh • Population: 1.2 million • Average PM2.5 pollution per cubic meter: 89 micrograms • Average PM10 pollution per cubic meter: 155 micrograms 

Gazipur City / Wikimedia Commons

19. Kaduna, Nigeria • Population: 1.1 million • Average PM2.5 pollution per cubic meter: 90 micrograms • Average PM10 pollution per cubic meter: 423 micrograms  

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19. Kaduna, Nigeria • Population: 1.1 million • Average PM2.5 pollution per cubic meter: 90 micrograms • Average PM10 pollution per cubic meter: 423 micrograms  

el-siddeeq lame / Wikimedia Commons

18. Dhaka, Bangladesh • Population: 18.2 million • Average PM2.5 pollution per cubic meter: 90 micrograms • Average PM10 pollution per cubic meter: 158 micrograms   

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18. Dhaka, Bangladesh • Population: 18.2 million • Average PM2.5 pollution per cubic meter: 90 micrograms • Average PM10 pollution per cubic meter: 158 micrograms   

Mohammed Tawsif Salam / Wikimedia Commons

17. Doha, Qatar • Population: 956,500 • Average PM2.5 pollution per cubic meter: 93 micrograms • Average PM10 pollution per cubic meter: 168 micrograms  

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17. Doha, Qatar • Population: 956,500 • Average PM2.5 pollution per cubic meter: 93 micrograms • Average PM10 pollution per cubic meter: 168 micrograms  

Nuroptics / Wikimedia Commons

16. Chittagong, Bangladesh • Population: 4.6 million • Average PM2.5 pollution per cubic meter: 95 micrograms • Average PM10 pollution per cubic meter: 135 micrograms  

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16. Chittagong, Bangladesh • Population: 4.6 million • Average PM2.5 pollution per cubic meter: 95 micrograms • Average PM10 pollution per cubic meter: 135 micrograms  

Bruno Le Bansais / Wikimedia Commons

15. Langfang, China • Population: 868,000 • Average PM2.5 pollution per cubic meter: 96 micrograms • Average PM10 pollution per cubic meter: 144 micrograms  

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15. Langfang, China • Population: 868,000 • Average PM2.5 pollution per cubic meter: 96 micrograms • Average PM10 pollution per cubic meter: 144 micrograms  

VCG / VCG via Getty Images

14. Ahmedabad, India • Population: 7.6 million • Average PM2.5 pollution per cubic meter: 100 micrograms • Average PM10 pollution per cubic meter: 83 micrograms   

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14. Ahmedabad, India • Population: 7.6 million • Average PM2.5 pollution per cubic meter: 100 micrograms • Average PM10 pollution per cubic meter: 83 micrograms   

GUFRAN KHAN / Wikimedia Commons

13. Tangshan, China • Population: 2.9 million • Average PM2.5 pollution per cubic meter: 102 micrograms • Average PM10 pollution per cubic meter: 153 micrograms  

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13. Tangshan, China • Population: 2.9 million • Average PM2.5 pollution per cubic meter: 102 micrograms • Average PM10 pollution per cubic meter: 153 micrograms  

Xiaolu Chu / Getty Images

12. Kampala, Uganda • Population: 2.0 million • Average PM2.5 pollution per cubic meter: 104 micrograms • Average PM10 pollution per cubic meter: 170 micrograms   

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12. Kampala, Uganda • Population: 2.0 million • Average PM2.5 pollution per cubic meter: 104 micrograms • Average PM10 pollution per cubic meter: 170 micrograms   

Simisa (talk · contribs) / Wikimedia Commons

11. Narayanganj, Bangladesh • Population: 543,000 • Average PM2.5 pollution per cubic meter: 106 micrograms • Average PM10 pollution per cubic meter: 191 micrograms  

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11. Narayanganj, Bangladesh • Population: 543,000 • Average PM2.5 pollution per cubic meter: 106 micrograms • Average PM10 pollution per cubic meter: 191 micrograms  

MIKParadox / Wikimedia Commons

10. Hengshui, China • Population: 4.4 million • Average PM2.5 pollution per cubic meter: 107 micrograms • Average PM10 pollution per cubic meter: 161 micrograms 

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10. Hengshui, China • Population: 4.4 million • Average PM2.5 pollution per cubic meter: 107 micrograms • Average PM10 pollution per cubic meter: 161 micrograms 

Tchumbley / Wikimedia Commons

9. Rawalpindi, Pakistan • Population: 2.6 million • Average PM2.5 pollution per cubic meter: 107 micrograms • Average PM10 pollution per cubic meter: 448 micrograms  

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9. Rawalpindi, Pakistan • Population: 2.6 million • Average PM2.5 pollution per cubic meter: 107 micrograms • Average PM10 pollution per cubic meter: 448 micrograms  

Trueblood786 / Wikimedia Commons

8. Peshawar, Pakistan • Population: 1.8 million • Average PM2.5 pollution per cubic meter: 111 micrograms • Average PM10 pollution per cubic meter: 540 micrograms 

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8. Peshawar, Pakistan • Population: 1.8 million • Average PM2.5 pollution per cubic meter: 111 micrograms • Average PM10 pollution per cubic meter: 540 micrograms 

Drsaeed90 / Wikimedia Commons

7. Handan, China • Population: 941,000 • Average PM2.5 pollution per cubic meter: 112 micrograms • Average PM10 pollution per cubic meter: 169 micrograms  

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7. Handan, China • Population: 941,000 • Average PM2.5 pollution per cubic meter: 112 micrograms • Average PM10 pollution per cubic meter: 169 micrograms  

Alex_Wang1 / iStock

6. Shijiazhuang, China • Population: 3.4 million • Average PM2.5 pollution per cubic meter: 121 micrograms • Average PM10 pollution per cubic meter: 305 micrograms  

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6. Shijiazhuang, China • Population: 3.4 million • Average PM2.5 pollution per cubic meter: 121 micrograms • Average PM10 pollution per cubic meter: 305 micrograms  

Public Domain / Wikimedia Commons

5. Delhi, India • Population: 26.5 million • Average PM2.5 pollution per cubic meter: 122 micrograms • Average PM10 pollution per cubic meter: 229 micrograms  

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5. Delhi, India • Population: 26.5 million • Average PM2.5 pollution per cubic meter: 122 micrograms • Average PM10 pollution per cubic meter: 229 micrograms  

McKay Savage / Flickr

4. Baoding, China • Population: 1.1 million • Average PM2.5 pollution per cubic meter: 126 micrograms • Average PM10 pollution per cubic meter: 190 micrograms  

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4. Baoding, China • Population: 1.1 million • Average PM2.5 pollution per cubic meter: 126 micrograms • Average PM10 pollution per cubic meter: 190 micrograms  

Romanov Alexey / Wikimedia Commons

3. Xingtai, China • Population: 689,000 • Average PM2.5 pollution per cubic meter: 128 micrograms • Average PM10 pollution per cubic meter: 193 micrograms 

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3. Xingtai, China • Population: 689,000 • Average PM2.5 pollution per cubic meter: 128 micrograms • Average PM10 pollution per cubic meter: 193 micrograms 

激动下下 / Wikimedia Commons

2. Bamenda, Cameroon • Population: 500,000 • Average PM2.5 pollution per cubic meter: 132 micrograms • Average PM10 pollution per cubic meter: 141 micrograms    

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2. Bamenda, Cameroon • Population: 500,000 • Average PM2.5 pollution per cubic meter: 132 micrograms • Average PM10 pollution per cubic meter: 141 micrograms    

Njeimosestimah / Wikimedia Commons

1. Patna, India • Population: 2.2 million • Average PM2.5 pollution per cubic meter: 149 micrograms • Average PM10 pollution per cubic meter: 167 micrograms   

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1. Patna, India • Population: 2.2 million • Average PM2.5 pollution per cubic meter: 149 micrograms • Average PM10 pollution per cubic meter: 167 micrograms   

Rheashita12345 / Wikimedia commons

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