Denver

Colorado and Utah's Worst-In-The-World Air Quality Precedes Grim Climate Report

Robyn Vincent

Two Western cities registered the poorest air quality in the world over the last week as smoke from wildfires in northern California turned the skies over the Rocky Mountains into a chalky white abyss.
Smoky Skies Could Linger Until Snow Flies

Maggie Mullen

Air quality specialists say the smoky conditions that showed up earlier than usual this year, could stick around until October for some parts of the region.