Dhaka, Feb. 3 -- Dhaka, the densely populated capital of Bangladesh, ranked fist among the world's most polluted cities on Tuesday morning, recording an Air Quality Index (AQI) of 275 at 11:19 am.

Today, the city's air was classified as 'very unhealthy', indicating a serious health threat, according to the AQI report.

Kinshasa in Congo, Ulaanbaatar in Mongolia, and Lahore in Pakistan occupied the second, thirtd, and fourth spots on the list, with AQI scores of 246, 217, and 209 respectively.

According to the AQI scale, a reading between 50 and 100 is considered 'moderate', with generally acceptable air quality, though sensitive individuals should limit prolonged outdoor exertion. AQI levels of 101-150 are 'unhealthy for sensitive group...