The World’s Most Polluted Cities

The air is so dirty, sometimes people can't see the building next to them
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Shutterstock/GRIGORIS SIAMIDIS

The most polluted city in the world is not, to most people’s surprise, Beijing or Delhi. In fact, neither is in the Top 10. (Delhi is 11th)

In its latest report, released a few days ago, the World Health Organization compared a total of 795 cities in 67 countries for levels of small and fine particulate matter (PM10 and PM2.5) between 2008 and 2013.

Sadly, global urban air pollution levels have increased by 8 percent, despite improvements in some regions such as China.

The PM2.5 micro-particles are classed as a Group 1 carcinogen. More than 5.5 million people worldwide are dying prematurely every year as a result of air pollution, according to research by the University of British Columbia. More than half of them are in China and India.

Click here to see the World’s Most Polluted Cities

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Mega-Cities With Pollution Levels That Could Kill You

15 Dirtiest Cities in the World

Have you been to these 10 of the world's cleanest cities?

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