Dhaka, Feb. 2 -- Dhaka, the densely populated capital of Bangladesh, ranked second among the world's most polluted cities on Monday morning, recording an Air Quality Index (AQI) of 262 at 9:02 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 Mogolia, and Cairo in Egypt occupied the first, third, and third spots on the list, with AQI scores of310, 262, and 265 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 groups', 151-2...