Dhaka, March 1 -- populated capital city of Bangladesh, has ranked 3rd on the list of cities with the worst air quality with an AQI index of 183 at 9 am on Sunday.

Dhaka's air was classified as ' unhealthy', according to IQAir, a Swiss free real-time air quality monitoring platform.

Pakistan's Lahore, India's Delhi occupied the first and second spots in the list, with AQI scores of 244 and 193 respectively.

When the AQI value for particle pollution is between 101 and 150, air quality is considered 'unhealthy for sensitive groups', between 150 and 200 is 'unhealthy', between 201 and 300 is said to be 'very unhealthy', while a reading of 301+ is considered 'hazardous', posing serious health risks to residents.

The AQI, an index for repo...