Pakistan’s two Major cities Lahore and Karachi have featured on the list of the world’s top five most polluted cities by capturing second and the third rank respectively.
According to air pollution data released by the US Air Quality Index, Lahore recorded a particulate matter (PM) rating of 181, placing the city at the second spot on the global index of most polluted cities.
Meanwhile, Karachi reported a particulate matter (PM) rating of 172 and was ranked third most polluted city in the world.
The standards set by the Air Quality Index categorises a city under “unhealthy” if the PM rating lies between 151 and 200. A rating between 201 and 300 falls under the category of “highly unhealthy” and anything above 301 falls under the “hazardous” category.
