At least twelve states have issued air quality alerts and advisories due to the ongoing Canadian wildfires sending smoke down ...

Air quality has taken a serious hit across the United States as a two-fold blow of wildfires in the West and in Canada have ...

There are more than 130 active fires in B.C., up from about 60 a week ago, though the B.C. Wildfire Service says cooler ...

Anyone who might be especially vulnerable to the effects of air pollution should limit their outdoor activities.

Vanhela said smoke from the wildfire, which carries fine particulate matter, can travel hundreds of miles and affect air ...

Smoke from hundreds of wildfires in Canada is lingering over the northern U.S., spreading across to roughly a dozen states from Wisconsin to Maine.

Since it started on Friday afternoon, the Gifford Fire -- which is situated within the Los Padres National Forest in Solvang, California -- has burned 82,567 acres and has only reached 7% containment, ...

Due to smoke from wildfires, several U.S. cities had an AQI over 100 on Aug. 5, which means the air is unhealthy for sensitive groups of people with respiratory and other health issues.

The Dragon Bravo and Billy fires were amongst the largest in the state, with firefighting efforts ongoing for each amid hot, dry weather.

From the dense fog in Sydney to a 'corpse flower' - here are the images of the day chosen by the Sky News picture editors.

The Billy Fire is prompting some evacuations in Gila County. The wildfire has been burning since early July and has scorched ...

This article originally appeared on USA TODAY: Gifford Fire burns 80,000 acres, causes mandatory evacuations. See wildfire maps. Gifford Fire burns 80,000 acres, causes mandatory evacuations. See ...