Air quality: China, India, Pakistan home to many of 30 most polluted places
24/7 Wall Street
![To identify the world ’ s most polluted cities, 24/7 Tempo reviewed data from the World Health Organization on the average annual concentration of harmful air particles in more than 2,600 cities around the globe.](https://cdn.statically.io/img/www.usatoday.com/gcdn/media/2019/12/02/USATODAY/usatsports/gettyimages-1075147142.jpg?width=660&height=372&fit=crop&format=pjpg&auto=webp)
To identify the world’s most polluted cities, 24/7 Tempo reviewed data from the World Health Organization on the average annual concentration of harmful air particles in more than 2,600 cities around the globe.
Sean Gallup / Staff / Getty Images![30. Xinxiang, Northeast China • Population: 5.7 million • Average annual PM2.5 pollution per cubic meter: 84 micrograms • Average annual PM10 pollution per cubic meter: 144 micrograms](https://cdn.statically.io/img/www.usatoday.com/gcdn/media/2019/12/02/USATODAY/usatsports/247WallSt.com-247WS-589911-rsz_xinxiang_city.jpg?width=660&height=372&fit=crop&format=pjpg&auto=webp)
30. Xinxiang, Northeast China
• Population: 5.7 million
• Average annual PM2.5 pollution per cubic meter: 84 micrograms
• Average annual PM10 pollution per cubic meter: 144 micrograms
Zhangmoon618 / Wikimedia Commons• Population: 5.7 million
• Average annual PM2.5 pollution per cubic meter: 84 micrograms
• Average annual PM10 pollution per cubic meter: 144 micrograms
![29. Khulna, Bangladesh • Population: 665,000 • Average annual PM2.5 pollution per cubic meter: 84 micrograms • Average annual PM10 pollution per cubic meter: 94 micrograms](https://cdn.statically.io/img/www.usatoday.com/gcdn/media/2019/12/02/USATODAY/usatsports/rsz_nagar_bhaban_khulna.jpg?width=660&height=396&fit=crop&format=pjpg&auto=webp)
29. Khulna, Bangladesh
• Population: 665,000
• Average annual PM2.5 pollution per cubic meter: 84 micrograms
• Average annual PM10 pollution per cubic meter: 94 micrograms
Asm Sultan / Wikimedia Commons• Population: 665,000
• Average annual PM2.5 pollution per cubic meter: 84 micrograms
• Average annual PM10 pollution per cubic meter: 94 micrograms
![28. Jiaozuo, Central China • Population: 732,000 • Average annual PM2.5 pollution per cubic meter: 85 micrograms • Average annual PM10 pollution per cubic meter: 142 micrograms](https://cdn.statically.io/img/www.usatoday.com/gcdn/media/2019/12/02/USATODAY/usatsports/247WallSt.com-247WS-589911-imageforentry1-yd4.jpg?width=660&height=372&fit=crop&format=pjpg&auto=webp)
28. Jiaozuo, Central China
• Population: 732,000
• Average annual PM2.5 pollution per cubic meter: 85 micrograms
• Average annual PM10 pollution per cubic meter: 142 micrograms
Zhangyuangeng / Getty Images• Population: 732,000
• Average annual PM2.5 pollution per cubic meter: 85 micrograms
• Average annual PM10 pollution per cubic meter: 142 micrograms
![27. Liaocheng, East China • Population: 677,000 • Average annual PM2.5 pollution per cubic meter: 86 micrograms • Average annual PM10 pollution per cubic meter: 151 micrograms](https://cdn.statically.io/img/www.usatoday.com/gcdn/media/2019/12/02/USATODAY/usatsports/247WallSt.com-247WS-589911-imageforentry3-yvg.jpg?width=660&height=372&fit=crop&format=pjpg&auto=webp)
27. Liaocheng, East China
• Population: 677,000
• Average annual PM2.5 pollution per cubic meter: 86 micrograms
• Average annual PM10 pollution per cubic meter: 151 micrograms
Chuyu / Getty Images• Population: 677,000
• Average annual PM2.5 pollution per cubic meter: 86 micrograms
• Average annual PM10 pollution per cubic meter: 151 micrograms
![26. Anyang, Central China • Population: 1.1 million • Average annual PM2.5 pollution per cubic meter: 86 micrograms • Average annual PM10 pollution per cubic meter: 155 micrograms](https://cdn.statically.io/img/www.usatoday.com/gcdn/media/2019/12/02/USATODAY/usatsports/247WallSt.com-247WS-589911-imageforentry4-bi6.jpg?width=660&height=372&fit=crop&format=pjpg&auto=webp)
26. Anyang, Central China
• Population: 1.1 million
• Average annual PM2.5 pollution per cubic meter: 86 micrograms
• Average annual PM10 pollution per cubic meter: 155 micrograms
Top Photo Corporation / Getty Images• Population: 1.1 million
• Average annual PM2.5 pollution per cubic meter: 86 micrograms
• Average annual PM10 pollution per cubic meter: 155 micrograms
![25. Xingtai, North China • Population: 742,000 • Average annual PM2.5 pollution per cubic meter: 87 micrograms • Average annual PM10 pollution per cubic meter: 185.9 micrograms](https://cdn.statically.io/img/www.usatoday.com/gcdn/media/2019/12/02/USATODAY/usatsports/xingtai-north-china.jpg?width=660&height=372&fit=crop&format=pjpg&auto=webp)
25. Xingtai, North China
• Population: 742,000
• Average annual PM2.5 pollution per cubic meter: 87 micrograms
• Average annual PM10 pollution per cubic meter: 185.9 micrograms
Https://www.panoramio.com/photo/89546195 / Wikimedia Commons• Population: 742,000
• Average annual PM2.5 pollution per cubic meter: 87 micrograms
• Average annual PM10 pollution per cubic meter: 185.9 micrograms
![24. Hengshui, North China • Population: 478,000 • Average annual PM2.5 pollution per cubic meter: 87 micrograms • Average annual PM10 pollution per cubic meter: 143 micrograms](https://cdn.statically.io/img/www.usatoday.com/gcdn/media/2019/12/02/USATODAY/usatsports/hengshui-north-china.jpg?width=660&height=372&fit=crop&format=pjpg&auto=webp)
24. Hengshui, North China
• Population: 478,000
• Average annual PM2.5 pollution per cubic meter: 87 micrograms
• Average annual PM10 pollution per cubic meter: 143 micrograms
Wangyunfeng / Wikimedia Commons• Population: 478,000
• Average annual PM2.5 pollution per cubic meter: 87 micrograms
• Average annual PM10 pollution per cubic meter: 143 micrograms
![23. Karachi, Pakistan • Population: 14.9 million • Average annual PM2.5 pollution per cubic meter: 8 micrograms • Average annual PM10 pollution per cubic meter: 290 micrograms](https://cdn.statically.io/img/www.usatoday.com/gcdn/media/2019/12/02/USATODAY/usatsports/247WallSt.com-247WS-589911-imageforentry526.jpg?width=660&height=372&fit=crop&format=pjpg&auto=webp)
23. Karachi, Pakistan
• Population: 14.9 million
• Average annual PM2.5 pollution per cubic meter: 8 micrograms
• Average annual PM10 pollution per cubic meter: 290 micrograms
Greg / Wikimedia Commons• Population: 14.9 million
• Average annual PM2.5 pollution per cubic meter: 8 micrograms
• Average annual PM10 pollution per cubic meter: 290 micrograms
![22. Shijiazhuang, North China • Population: 3.3 million • Average annual PM2.5 pollution per cubic meter: 89 micrograms • Average annual PM10 pollution per cubic meter: 147 micrograms](https://cdn.statically.io/img/www.usatoday.com/gcdn/media/2019/12/02/USATODAY/usatsports/247WallSt.com-247WS-589911-imageforentry7-jh9.jpg?width=660&height=371&fit=crop&format=pjpg&auto=webp)
22. Shijiazhuang, North China
• Population: 3.3 million
• Average annual PM2.5 pollution per cubic meter: 89 micrograms
• Average annual PM10 pollution per cubic meter: 147 micrograms
Lnzyx / Getty Images• Population: 3.3 million
• Average annual PM2.5 pollution per cubic meter: 89 micrograms
• Average annual PM10 pollution per cubic meter: 147 micrograms
![21. Ji ' nan, East China • Population: 4 million • Average annual PM2.5 pollution per cubic meter: 90 micrograms • Average annual PM10 pollution per cubic meter: 192.3 micrograms](https://cdn.statically.io/img/www.usatoday.com/gcdn/media/2019/12/02/USATODAY/usatsports/247WallSt.com-247WS-589911-imageforentry8-awt.jpg?width=660&height=371&fit=crop&format=pjpg&auto=webp)
21. Ji'nan, East China
• Population: 4 million
• Average annual PM2.5 pollution per cubic meter: 90 micrograms
• Average annual PM10 pollution per cubic meter: 192.3 micrograms
EarnestTse / Getty Images• Population: 4 million
• Average annual PM2.5 pollution per cubic meter: 90 micrograms
• Average annual PM10 pollution per cubic meter: 192.3 micrograms
![20. Ulaanbaatar, Mongolia • Population: 1.4 million • Average annual PM2.5 pollution per cubic meter: 92.2 micrograms • Average annual PM10 pollution per cubic meter: 196.9 micrograms](https://cdn.statically.io/img/www.usatoday.com/gcdn/media/2019/12/02/USATODAY/usatsports/247WallSt.com-247WS-589911-imageforentry9-wwt.jpg?width=660&height=371&fit=crop&format=pjpg&auto=webp)
20. Ulaanbaatar, Mongolia
• Population: 1.4 million
• Average annual PM2.5 pollution per cubic meter: 92.2 micrograms
• Average annual PM10 pollution per cubic meter: 196.9 micrograms
Katiekk2 / Getty Images• Population: 1.4 million
• Average annual PM2.5 pollution per cubic meter: 92.2 micrograms
• Average annual PM10 pollution per cubic meter: 196.9 micrograms
![19. Baoding, North China • Population: 1.1 million • Average annual PM2.5 pollution per cubic meter: 93 micrograms • Average annual PM10 pollution per cubic meter: 147 micrograms](https://cdn.statically.io/img/www.usatoday.com/gcdn/media/2019/12/02/USATODAY/usatsports/imageforentry10-rno.jpg?width=660&height=371&fit=crop&format=pjpg&auto=webp)
19. Baoding, North China
• Population: 1.1 million
• Average annual PM2.5 pollution per cubic meter: 93 micrograms
• Average annual PM10 pollution per cubic meter: 147 micrograms
Romanov Alexey / Wikimedia Commons• Population: 1.1 million
• Average annual PM2.5 pollution per cubic meter: 93 micrograms
• Average annual PM10 pollution per cubic meter: 147 micrograms
![18. Narayangonj, Bangladesh • Population: 543,000 • Average annual PM2.5 pollution per cubic meter: 94.2 micrograms • Average annual PM10 pollution per cubic meter: 205 micrograms](https://cdn.statically.io/img/www.usatoday.com/gcdn/media/2019/12/02/USATODAY/usatsports/narayangonj-bangladesh.jpg?width=660&height=372&fit=crop&format=pjpg&auto=webp)
18. Narayangonj, Bangladesh
• Population: 543,000
• Average annual PM2.5 pollution per cubic meter: 94.2 micrograms
• Average annual PM10 pollution per cubic meter: 205 micrograms
MIKParadox / Wikimedia Commons• Population: 543,000
• Average annual PM2.5 pollution per cubic meter: 94.2 micrograms
• Average annual PM10 pollution per cubic meter: 205 micrograms
![17. 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](https://cdn.statically.io/img/www.usatoday.com/gcdn/media/2019/12/02/USATODAY/usatsports/imageforentry13-tkd.jpg?width=660&height=371&fit=crop&format=pjpg&auto=webp)
17. 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
Athomson / Flickr• 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
![16. 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](https://cdn.statically.io/img/www.usatoday.com/gcdn/media/2019/12/02/USATODAY/usatsports/patiala-north-india.jpg?width=660&height=372&fit=crop&format=pjpg&auto=webp)
16. 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
Harvinder Chandigarh / Wikimedia Commons• Population: 510,000
• Average annual PM2.5 pollution per cubic meter: 101.2 micrograms
• Average annual PM10 pollution per cubic meter: 183.7 micrograms
![15. Kampala, Uganda • Population: 1.5 million • Average annual PM2.5 pollution per cubic meter: 104 micrograms • Average annual PM10 pollution per cubic meter: 170 micrograms](https://cdn.statically.io/img/www.usatoday.com/gcdn/media/2019/12/02/USATODAY/usatsports/247WallSt.com-247WS-589911-imageforentry148.jpg?width=660&height=372&fit=crop&format=pjpg&auto=webp)
15. Kampala, Uganda
• Population: 1.5 million
• Average annual PM2.5 pollution per cubic meter: 104 micrograms
• Average annual PM10 pollution per cubic meter: 170 micrograms
Simisa (talk · Contribs) / Wikimedia Commons• Population: 1.5 million
• Average annual PM2.5 pollution per cubic meter: 104 micrograms
• Average annual PM10 pollution per cubic meter: 170 micrograms
![14. 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](https://cdn.statically.io/img/www.usatoday.com/gcdn/media/2019/12/02/USATODAY/usatsports/imageforentry16-qkb.jpg?width=660&height=372&fit=crop&format=pjpg&auto=webp)
14. 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
VuCongDanh / Getty Images• 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
![13. Rawalpindi, Pakistan • Population: 2.1 million • Average annual PM2.5 pollution per cubic meter: 107 micrograms • Average annual PM10 pollution per cubic meter: 448 micrograms](https://cdn.statically.io/img/www.usatoday.com/gcdn/media/2019/12/02/USATODAY/usatsports/247WallSt.com-247WS-589911-imageforentry179.jpg?width=660&height=372&fit=crop&format=pjpg&auto=webp)
13. Rawalpindi, Pakistan
• Population: 2.1 million
• Average annual PM2.5 pollution per cubic meter: 107 micrograms
• Average annual PM10 pollution per cubic meter: 448 micrograms
Trueblood786 / Wikimedia Commons• Population: 2.1 million
• Average annual PM2.5 pollution per cubic meter: 107 micrograms
• Average annual PM10 pollution per cubic meter: 448 micrograms
![11. Muzaffarpur, East India • Population: 439,000 • Average annual PM2.5 pollution per cubic meter: 120 micrograms • Average annual PM10 pollution per cubic meter: 220.9 micrograms](https://cdn.statically.io/img/www.usatoday.com/gcdn/media/2019/12/02/USATODAY/usatsports/247WallSt.com-247WS-589911-imageforentry188.jpg?width=660&height=372&fit=crop&format=pjpg&auto=webp)
11. Muzaffarpur, East India
• Population: 439,000
• Average annual PM2.5 pollution per cubic meter: 120 micrograms
• Average annual PM10 pollution per cubic meter: 220.9 micrograms
Drsaeed90 / Wikimedia Commons• Population: 439,000
• Average annual PM2.5 pollution per cubic meter: 120 micrograms
• Average annual PM10 pollution per cubic meter: 220.9 micrograms
![10. 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 microgram](https://cdn.statically.io/img/www.usatoday.com/gcdn/media/2019/12/02/USATODAY/usatsports/muzaffarpur-east-india.jpg?width=660&height=372&fit=crop&format=pjpg&auto=webp)
10. 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 microgram
Tanmay Tarun / Wikimedia Commons• Population: 902,000
• Average annual PM2.5 pollution per cubic meter: 119.6 micrograms
• Average annual PM10 pollution per cubic meter: 124.3 microgram
![9. Agra, North India • Population: 2 million • Average annual PM2.5 pollution per cubic meter: 131.4 micrograms • Average annual PM10 pollution per cubic meter: 194.5 micrograms](https://cdn.statically.io/img/www.usatoday.com/gcdn/media/2019/12/02/USATODAY/usatsports/imageforentry18-hne.jpg?width=660&height=371&fit=crop&format=pjpg&auto=webp)
9. Agra, North India
• Population: 2 million
• Average annual PM2.5 pollution per cubic meter: 131.4 micrograms
• Average annual PM10 pollution per cubic meter: 194.5 micrograms
Amlanmathur / Getty Images• Population: 2 million
• Average annual PM2.5 pollution per cubic meter: 131.4 micrograms
• Average annual PM10 pollution per cubic meter: 194.5 micrograms
![8. Bamenda, Cameroon • Population: 349,000 • Average annual PM2.5 pollution per cubic meter: 132 micrograms • Average annual PM10 pollution per cubic meter: 141 micrograms](https://cdn.statically.io/img/www.usatoday.com/gcdn/media/2019/12/02/USATODAY/usatsports/imageforentry20-yyy.jpg?width=660&height=371&fit=crop&format=pjpg&auto=webp)
8. Bamenda, Cameroon
• Population: 349,000
• Average annual PM2.5 pollution per cubic meter: 132 micrograms
• Average annual PM10 pollution per cubic meter: 141 micrograms
Saiko3p / Getty Images• Population: 349,000
• Average annual PM2.5 pollution per cubic meter: 132 micrograms
• Average annual PM10 pollution per cubic meter: 141 micrograms
![7. Lucknow, North India • Population: 3.2 million • Average annual PM2.5 pollution per cubic meter: 138.4 micrograms • Average annual PM10 pollution per cubic meter: 254.9 micrograms](https://cdn.statically.io/img/www.usatoday.com/gcdn/media/2019/12/02/USATODAY/usatsports/247WallSt.com-247WS-589911-imageforentry244.jpg?width=660&height=372&fit=crop&format=pjpg&auto=webp)
7. Lucknow, North India
• Population: 3.2 million
• Average annual PM2.5 pollution per cubic meter: 138.4 micrograms
• Average annual PM10 pollution per cubic meter: 254.9 micrograms
Njeimosestimah / Wikimedia Commons• Population: 3.2 million
• Average annual PM2.5 pollution per cubic meter: 138.4 micrograms
• Average annual PM10 pollution per cubic meter: 254.9 micrograms
![7. Lucknow, North India • Population: 3.2 million • Average annual PM2.5 pollution per cubic meter: 138.4 micrograms • Average annual PM10 pollution per cubic meter: 254.9 micrograms](https://cdn.statically.io/img/www.usatoday.com/gcdn/media/2019/12/02/USATODAY/usatsports/imageforentry21-bcd.jpg?width=660&height=371&fit=crop&format=pjpg&auto=webp)
7. Lucknow, North India
• Population: 3.2 million
• Average annual PM2.5 pollution per cubic meter: 138.4 micrograms
• Average annual PM10 pollution per cubic meter: 254.9 micrograms
Amlanmathur / Getty Images• Population: 3.2 million
• Average annual PM2.5 pollution per cubic meter: 138.4 micrograms
• Average annual PM10 pollution per cubic meter: 254.9 micrograms
![6. Delhi, North India • Population: 25.7 million • Average annual PM2.5 pollution per cubic meter: 143.1 micrograms • Average annual PM10 pollution per cubic meter: 292.3 micrograms](https://cdn.statically.io/img/www.usatoday.com/gcdn/media/2019/12/02/USATODAY/usatsports/imageforentry32-kks.jpg?width=660&height=372&fit=crop&format=pjpg&auto=webp)
6. Delhi, North India
• Population: 25.7 million
• Average annual PM2.5 pollution per cubic meter: 143.1 micrograms
• Average annual PM10 pollution per cubic meter: 292.3 micrograms
Konstik / Getty Images• Population: 25.7 million
• Average annual PM2.5 pollution per cubic meter: 143.1 micrograms
• Average annual PM10 pollution per cubic meter: 292.3 micrograms
![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](https://cdn.statically.io/img/www.usatoday.com/gcdn/media/2019/12/02/USATODAY/usatsports/imageforentry23-nly.jpg?width=660&height=371&fit=crop&format=pjpg&auto=webp)
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
X_world / Getty Images• 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
![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](https://cdn.statically.io/img/www.usatoday.com/gcdn/media/2019/12/02/USATODAY/usatsports/imageforentry24-z6p.jpg?width=660&height=372&fit=crop&format=pjpg&auto=webp)
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
AlxeyPnferov / Getty Images• 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
![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](https://cdn.statically.io/img/www.usatoday.com/gcdn/media/2019/12/02/USATODAY/usatsports/247WallSt.com-247WS-589911-gaya-east-india.jpg?width=660&height=372&fit=crop&format=pjpg&auto=webp)
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
Giant Buddha / Wikimedia Commons• Population: 508,000
• Average annual PM2.5 pollution per cubic meter: 149.1 micrograms
• Average annual PM10 pollution per cubic meter: 274.6 micrograms
![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](https://cdn.statically.io/img/www.usatoday.com/gcdn/media/2019/12/02/USATODAY/usatsports/faridabad-north-india.png?width=660&height=372&fit=crop&format=pjpg&auto=webp)
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
RISHABHNAGPAL20 / Wikimedia Commons• 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
![1. Kanpur, North India • Population: 3 million • Average annual PM2.5 pollution per cubic meter: 173 micrograms • Average annual PM10 pollution per cubic meter: 318.5 micrograms](https://cdn.statically.io/img/www.usatoday.com/gcdn/media/2019/12/02/USATODAY/usatsports/imageforentry28-s3l.jpg?width=660&height=372&fit=crop&format=pjpg&auto=webp)
1. Kanpur, North India
• Population: 3 million
• Average annual PM2.5 pollution per cubic meter: 173 micrograms
• Average annual PM10 pollution per cubic meter: 318.5 micrograms
CddharthSingh / Getty Images• Population: 3 million
• Average annual PM2.5 pollution per cubic meter: 173 micrograms
• Average annual PM10 pollution per cubic meter: 318.5 micrograms
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