Republican lawmakers are blaming Canada for not preventing and containing wildfires, whose smoke has fouled the air in ...

Expect a cooler Wednesday with hazy skies from Canadian wildfire smoke, followed by a warming trend and potential ...

For most of the past decade, forecasters have been able to use satellites to track these smoke plumes, but the view was only ...

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

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

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

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

Forecasting wildfire smoke is hard. We review the best tools to help you predict when unhealthful levels of smoke are coming.

Despite the wildfires and evacuations from the nearby Lee and Elk fires, some students and staff in Garfield County returned ...

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

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