Dhaka's air quality slipped back to the 'unhealthy' zone on Saturday.
With an air quality index (AQI) score of 181 at 8:32 am, the metropolis ranked seventh in the list of world cities with the worst air quality.
Pakistan’s Lahore, India’s Delhi and Kolkata occupied the first three spots in the list, with AQI scores of 287, 284 and 212, respectively.
An AQI between 201 and 300 is said to be 'poor', while a reading of 301 to 400 is considered 'hazardous', posing serious health risks to residents.
Dhaka has long been grappling with air pollution issues. Its air quality usually turns unhealthy in winter and improves during the monsoon.
