Dhaka, March 18 -- Dhaka, the densely populated capital of Bangladesh, ranked 18th among the world's most polluted cities on Wednesday morning, recording an Air Quality Index (AQI) of 82 at 08:50 am.

Today, the city's air was classified as 'moderate, indicating generally acceptable but poses a slight risk to a very small number of unusually sensitive people, according to the AQI report.

Delhi in India, Lahore in Pakistan, and Karachi in Pakistan occupied the first, second, and third spots on the list, with AQI scores of 203, 160, and 157 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 exert...