Dhaka, Nov. 11 -- Dhaka's air quality is still 'unhealthy', but that's good news for the residents of the metropolis.

In fact, the densely populated capital of Bangladesh has slipped to the fourth position in the list of world cities with the worst air quality.

On Thursday, the capital's air quality index (AQI) was recorded at 185 around 9:00am.

Pakistan's Lahore, India's Delhi and Bosnia Herzegovina's Sarajevo occupied the top three spots respectively with scores of 478, 354 and 191, reports UNB.

An AQI between 101 and 200 is considered 'unhealthy', particularly for sensitive groups.

Similarly, an AQI between 201 and 300 is said to be 'poor', while a reading of 301 to 400 is considered 'hazardous', posing serious health risks to res...