Dhaka, March 27 -- Dhaka ranked eighth among cities worldwide with the worst air quality on Friday morning.

The capital recorded an Air Quality Index (AQI) score of 151 at 08:45am, which was classified as "unhealthy", according to IQAir.

Thailand's Chiang Mai topped the list with an AQI score of 194. Nepal's Kathmandu ranked second with a score of 173, while South Korea's Seoul placed third, also recording an AQI score of 173.

An AQI between 151 and 200 is considered unhealthy, meaning everyone may begin to experience health effects, with sensitive groups facing more serious risks.

When the AQI value for particle pollution is between 101 and 150, air quality is considered 'unhealthy for sensitive groups', between 151 and 200 is 'unhea...