Dhaka, Oct. 29 -- Dhaka ranked 20th among the world's most polluted cities on Thursday morning, recording an Air Quality Index (AQI) score of 96 at 10:40am.

The city's air quality was classified as 'moderate', indicating little to no risk to the general public, although a small number of unusually sensitive people may experience minor health effects.

Pakistan's Lahore topped the list with an AQI score of 298, followed by India's Delhi at 255 and Uzbekistan's Tashkent at 183.

According to the AQI scale, readings of 101-150 are considered unhealthy for sensitive groups, while scores of 151-200 indicate unhealthy air quality. Readings of 201-300 are classified as very unhealthy, and scores above 301 are considered hazardous, posing seriou...