Air quality alerts spanned at least 13 U.S. states on Tuesday, with sensitive groups urged to limit outdoor activity to avoid ...

Under a Code Orange alert, it's recommended that children, older adults and those with respiratory illnesses limit time spent outdoors.

Wildfires in Siberia's Arctic zone cause emissions of carbon that previously was "trapped" in the permafrost, thus adding to the global warming, senior researcher at the Sukachev Institute of Forest E ...

Smoke from Canadian wildfires is causing air quality concerns for millions of Americans in the Midwest and Northeast. Air ...

Having breathing trouble today? Canadian wildfire smoke is drifting across Ohio today, dropping the air quality in parts of ...

A statewide air quality advisory remains in place for Aug. 5. Officials say wildfire smoke may dissipate by mid-week. Check out the air quality map.

Canadian wildfire smoke is still lingering across Michigan, causing hazy skies. Another air quality advisory has been issued.

Fires in California, Arizona, Utah and Nevada are growing fast in brutal heat. The Dragon Bravo Fire has topped 110,000 acres ...

Improvements will be made in terms of wildfire smoke over the next few days. After dense plumes and high amounts of smoke ...

Edison's unabashed greed or Gov. Gavin Newsom's idea that customers should pay for Edison's potential misdeeds,' writes an ...

Wildfire smoke from Canada has prompted officials to place the Lehigh Valley and surrounding counties under an air quality ...

More warmth and more noticeable humidity will build in for the rest of the week. Highs will be into the mid to upper 80s ...