In terms of pollution, Lahore is on the first and Karachi on the fourth place, while the air of both the cities has been declared as extremely harmful to health.
You will be surprised to know that the major cities of Pakistan still feature in the list of the most polluted cities in the world.
The amount of polluted dust in the air of Lahore is a record of 227 particulate meters, while the amount of polluted dust in the air of Karachi is 173 particulate meters.
Keep in mind that pollution from 151 to 200 levels is harmful to health, while pollution from 201 to 300 levels is extremely harmful to health.
At the same time, levels above 301 indicate hazardous pollution, pollution-related health experts say that asthma and respiratory patients should take special care.