In letters expressing outrage and indignation, Republican lawmakers are demanding more forest thinning, prescribed burns and ...

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 ...

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

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

She says emissions from things like transportation and heating have never triggered an air quality alert in Vermont, unlike ...

Colorado State researchers reveal the effects of wildfire smoke on plant growth and photosynthesis, with potential impacts to ...

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

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

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

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