Dhaka, May 29 -- Dhaka, the capital of , ranked eighth on the list of the world's most polluted cities on Friday morning, recording an Air Quality Index (AQI) score of 99.

According to the AQI index, the city's air quality was categorised as 'Moderate' at 11:50am.

in the topped the pollution list with an AQI score of 156, followed by in with 129 and in with 126.

An AQI score ranging from 101 to 150 is considered 'unhealthy for sensitive groups', while a reading between 151 and 200 is labelled 'unhealthy'.

AQI values between 201 and 300 are regarded as 'very unhealthy', whereas readings above 301 are classified as 'hazardous', indicating serious health risks.

The AQI serves as a daily measure of air quality, indicating how clean or po...