Forecasters with the National Oceanic and Atmospheric Administration say the smoke and the oppressive heat that have plagued different parts of the U.S. will continue to be a problem for some time.

Patterns of colourful swirls and twirls of smoke help to create these imaginative spellbinding photographs. The hypnotic and psychedelic images were created by American psychologist Mark Scalco, 49, ...

Plumes of smoke drifted up from a fire steadily taking over a 30-acre prairie at Cedar Creek Ecosystem Science Reserve, north of the Twin Cities. Amid the haze, five black drones zipped around. More ...

The air is as poor as I’ve ever seen it here in central Indiana and for the entire state. Air Quality Alert day has been extended into Thursday as transition to a potential stormy pattern unfolds ...

In Seattle, a city often washed clean by Pacific air, even modest wildfire smoke was linked to more violence. On days when ...