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

Any bit of sunshine in the forecast today will be met with not just extra clouds but also some haze and upper level smoke.

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

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

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

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

Canadian wildfires burning across northern Manitoba and Saskatchewan are sending smoke through central Canada, the Great ...

Across the state, Oregon’s air is getting harder to breathe. The number of days the air quality index was unhealthy for ...

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

An air quality alert is in effect for all of Massachusetts as smoke from Canadian wildfires descends into the Boston area.

Air quality alerts are in place again for the entire Western Slope as firefighters battle more than 20 fires. The Colorado ...