Top Ten World's Most Polluted Cities

Canadians can sleep a bit easier with no cities in Canada on this list.

1. Dhaka, Bangladesh

2. Lahore, Pakistan

3. Patna, India

4. New Delhi, India

5. Delhi, India

6. Urumqi, China

7. Muzaffarnagar, India

8. Xian, China

9. Xuchang, China

10. Peshawar, Pakistan

Source: Smart Air