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

While the smoke is worst along the Western Slope where the fires are burning, levels are also fluctuating on the Front Range.

The Oregon Department of Environmental Quality has released the 2025 Wildfire Smoke Trends Report, which gathers and examines ...

State officials are encouraging Michiganders who own their own air quality sensors to contribute their readings to ongoing ...

The Bay Area Air District has issued an air quality advisory in the region for Tuesday because of smoke from a wildfire in ...

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

Winds could blow smoke from the Bear Gulch fire burning on the Olympic Peninsula, bringing the potential for unhealthy air ...

Wildfire smoke from the Bear Gulch Fire could create “unhealthy or hazardous” air quality conditions in Mason County over the ...

The Mount Underwood fire near Port Alberni continues to grow, and many on Vancouver Island are feeling the impact. Island ...

Here's why the Canadian wildfire smoke is returning to the state and what to know about the latest air quality advisory.

Even if we don’t see flames where we live, across much of the U.S. and Canada, in any given year, we are likely to see smoke and breathe polluted air from fires more than a thousand miles away.

Researchers found that wildfire smoke can raise ozone to dangerous levels, posing hidden health risks even in remote areas.