Dhaka, the overcrowded capital city of Bangladesh, has ranked 23th on the list of cities with the worst air quality with an AQI score of 81, Qatar's Doha 96 and Saudi Arabia's Riyadh 91 at 9:04am this ...

Photos of the Vietnamese capital, home to almost 9 million people, show the environmental cost of the Southeast Asian ...

While widespread issues from firework pollution is not expected, air quality on a local scale can get hazardous for short ...

Global air quality readings fluctuate by the hour depending on human activity, the weather and the time of day.

An Air Quality Health Advisory has been issued for the New York City Metro regions and Long Island from 11 a.m. to 11 p.m.