Air quality of Bangladesh was the worst in the world, while its capital Dhaka was the second most air polluted city in 2020, said a global report.
"South Asia remained the most polluted region of the world with Bangladesh, India and Pakistan sharing 42 of the 50 most polluted cities worldwide," shows new data from IQAir's global air quality data platform in its World Air Quality Report 2020.
The report published recently said the average annual PM 2.5 concentrations in Bangladesh was 77.1 micrograms per cubic meter (mcg/m3) of air, which is seven times above WHO exposure recommendation.
Researchers from IQAir -- a global air quality information and Swiss-based tech company -- analyzed pollution data from 106 countries, specifically measuring PM 2.5, a microscopic pollutant that can cause serious health risks.
"An estimated 13-22 percent of deaths in this region are linked to the health effects of air pollution exposure, with associated estimated costs equating to 7.4 percent of the region's GDP," the report said.