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

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

Rio Blanco County officials lifted some mandatory evacuation and pre-evacuation orders Friday afternoon for the Elk and Lee ...

It’s among the wildfires that are raging in North America and Europe as climate change creates dangerous conditions, posing ...

More than 130,000 acres of land have burned in separate wildfires in Delta, Dolores, Garfield, Grand, Mesa, Moffat, Montrose, ...

Chicago faces a persistent heatwave with temperatures forecasted to reach the mid 90s, minimal rain chances, and potential ...

An air quality alert was issued by the National Weather Service in Milwaukee-Sullivan at 1:53 p.m. on Friday, Aug. 8.

Elevated fire weather concerns are expected to continue through Monday “given interior heat, low humidity, and daily ...

The Gifford Fire that has scorched close to 100,000 acres of rural San Luis Obispo County showed some signs of relenting overnight into Friday as fire crews worked to contain the blaze.

Parts of Los Angeles County were evacuated in the early morning hours Friday after the fast-moving wildfire, named the Canyon ...

National Weather Service has issued heat advisories for Fox Valley and Green Bay areas and parts of the Northwoods.

Scorching hot temperatures, likely soaring into the triple digits, will settle across Denver and the Front Range -- ...