The EPA's Air Quality Index can tell you whether breathing outside air can be harmful. Here's how to read the scale to plan ...

The smoke from Canadian wildfires produced some of the worst fine particle pollution on record in Minnesota over the weekend.

Smoke from wildfires in Manitoba, a Western province facing its worst fire season in 30 years, has created hazardous air ...

Partial blue skies in the morning allowed many park visitors to ignore fires on the North Rim. By afternoon, ashfall made for ...

I lost my home in the Pacific Palisades fire. Although wildfires have become a part of modern life, you can take steps to ...

Though the Maine DEP expects a large amount of smoke to move out on Wednesday, the smoke will not entirely clear out of Maine ...

Though much of the wildfire smoke will remain high up in the atmosphere, a portion will mix with air on the surface, ...

Smoke from Northern California wildfires, including the Green Fire, continues to affect Reno and surrounding areas. As of ...

The Canadian government’s Wildfire Smoke Fine Particulate Matter map models wildfire smoke for July 15-17, 2025. It shows ...

Unhealthy air has invaded Minnesota, Wisconsin and North Dakota early this week as a new round of wildfire smoke from Canada ...

An Air Quality Alert is in effect for all of Southeast Michigan and has now been extended through the end of Tuesday.

A team of Stanford scientists found that pre-burning certain areas reduced the severity of future wildfires by as much as 16% ...