Dhaka's air quality continued to be in the 'unhealthy' zone on Saturday.
With an air quality index (AQI) score of 170 at 8:58 am, the metropolis ranked fourth in the list of world cities with the worst air quality.
Pakistan’s Lahore, India’s Delhi and Pakistan’s Karachi occupied the first three spots in the list, with AQI scores of 350, 217 and 184, 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.
As per the World Health Organization (WHO), air pollution kills an estimated seven million people worldwide every year, largely as a result of increased mortality from stroke, heart disease, chronic obstructive pulmonary disease, lung cancer and acute respiratory infections.