Weather across Colorado competed for most dramatic forecast on Saturday as red flag conditions challenged firefighters on the ...

Thick smoke from the Canyon Fire clouded the sky in Castaic, California, on Friday. The fire has burned more than 5,000 acres ...

Wildfires release vast amounts of visible pollutants into the atmosphere that darken skies and push people indoors to avoid ...

The National Weather Service said the alert will be in effect until Sunday morning in the Santa Clarita Valley and Saturday ...

This story was originally published by Grist with the headline As California burns, new research shows smoke is wildfire’s ...

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 ...

Small particles can get lodged in crevices of organs from lungs to arteries, causing inflammation and other health issues.

Wildfire smoke can cause eye and throat irritation, coughing, wheezing, and shortness of breath — even for healthy people. It ...

Smoke drifting south from Canadian wildfires has made skies in Pennsylvania and other states hazy this week. The Pennsylvania ...

Wildfire smoke doesn’t just cloud the horizon, it can chemically change the air at ground level and in layers of the ...

Several rounds of wildfire smoke have been moving into Denver, Boulder, Fort Collins and communities up and down the I-25 ...