Bangladesh’s capital Dhaka has been ranked the fourth most polluted city in the world.
Dhaka scored 191 in the US Air Quality Index (AQI) on Wednesday. The air was classified as “unhealthy.”
The world’s worst air quality was detected in Chiang Mai, Thailand, with a score of 246.
Bangladesh, one of the most densely-populated countries in the world, has been struggling with air pollution for a long time. Dhaka continuously ranks among the world’s most polluted cities.
Brick kilns, vehicles run on fuel with high levels of sulphur and construction work have been identified as major sources of air pollution.
The air quality declines during the dry months, from October to April, but improves in the monsoon.
The situation is very serious, experts say, pointing out that five of the top 10 causes of death in Bangladesh are related to air pollution.