Karachi tops among most polluted cities in world

Karachi: Karachi is ranked as one of the most polluted cities in the world on Monday, and the air is dangerous to human health.

Air pollution in Karachi is a record 162 particulate meters.

The third-most polluted city in the world is Lahore. Lahore's contaminated dust concentration is estimated to be 151 particulate meters.

150 to 200 polluted, 200 to 300 highly polluted and more than 300 is considered as dangerous pollution.