20 Most Polluted Cities in the World
| January 2, 2017
Peshawar, Pakistan
The World Health Organization has stated that any areas with air quality above 10 particles per million (ppm) is considered to be unhealthy.
The ancient city of Peshawar, Pakistan, which in recent decades has been taken over by brick kiln factories and traffic, currently has an air quality of 23 ppm, making it one the most polluted cities on the planet.
SHARE ON
Advertisement