Lahore has once again topped the list of the world's most polluted cities, with air quality levels reaching hazardous levels.
According to the Environmental Protection Agency (EPA), Lahore's Air Quality Index (AQI) surged to 332, placing it in the "hazardous" category.
The EPA classifies an Air Quality Index (AQI) reading between 0 and 100 as "clean and healthy", while 101 to 200 falls under the "moderately polluted but tolerable" category.
Lahore's air quality reached hazardous levels on Monday morning.
Author's summary: Lahore tops the list of polluted cities.