Dhaka, March 8 -- Dhaka, the densely populated capital of Bangladesh, ranked nine among the world's most polluted cities on Sunday morning, recording an Air Quality Index (AQI) of 161 at 09:20 am.

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

Lahore in Pakistan, Delhi in India and Kathmandu in Nepal occupied the first, third, and fourth spots on the list, with AQI scores of 282, 240, and 189 respectively.

Dhaka records 'very unhealthy' air, second most polluted city globally

In contrast, Batam in Indonesia recorded the world's cleanest air, with an AQI score of 0.

According to the AQI scale, a reading between 50 and 100 is considered 'moderate', with generally a...