Strong Inversion Causes Brown Cloud To Hang Over Denver, Front RangeA strong inversion was over the Front Range on Tuesday trapping pollution near the ground and making for poor visibility.
Denver Weather: Scattered Storms, Most Widespread On SaturdaySome storms could produce locally heavy rainfall, especially in and near the higher terrain.
Western Wildfires Causing Widespread Smoke, Haze Across ColoradoA large ridge of high pressure in the atmosphere is to blame.
Hazy, Smokey Skies Prompt Air Quality Health Advisory For SomeHazy skies blanketed most of the Denver metro area on Saturday. Wildfires from the west are to blame, and the grayish-brown air prompted some concern from citizens.
'Unhealthy Levels' Of Wildfire Smoke Chokes Southwest ColoradoAn air quality health advisory for wildfire smoke has been issued for much of southwest Colorado.
Two Large Wildfires May Produce Smoky Skies Across Colorado SundayThe smoke is coming from the 416 Fire in southwest Colorado and the Ute Park Fire in northern New Mexico.
Registration Opens For 2018 Bike To Work DayWay to Go opens registration for Bike To Work Day as a way to collect data to support the region’s biking infrastructure.
America's Air Isn't Getting Cleaner As Fast As It Used ToFor decades America's air was getting cleaner as levels of a key smog ingredient steadily dropped. That changed about seven years ago when pollution reductions leveled off, a new study found.
Denver Schools Will Help Monitor Air QualityThe Denver Public Schools will soon play an important role in monitoring the city's air quality, thanks to a $100,000 grant.
Haze, Smoke Expected To Clear Up In Much Of Colorado SoonAir quality is expected to be the worst Friday in the Denver area and the rest of the Front Range along with the northern mountains.
Fires, Smoky Skies Push Activities IndoorsIn Steamboat Springs, the football team moved cafeteria tables to make room for practice indoors on Thursday.
Why 'Mountain Breeze' Creates Poor Air Quality In Colorado's Central MountainsAlerts for air quality continue in Colorado's central mountains, including the counties of Eagle, Summit, Grand and Lake.
Smoke From Utah Wildfires May Return To Colorado This WeekShifting upper-level winds will play a big role in this week's forecast.
Colorado Researchers To Embark On Large-Scale Wildfire Smoke StudyResearchers in Colorado are set to embark on the first large-scale study of how smoke from wildfires in the West impacts our environment.
Air Quality Update From CBS4 Medical Editor Dr. Dave HnidaThe air from wildfires in our state is not as bad as it has been in times past, but nonetheless, there are some precautions that some people should take. CBS4 Medical Editor Dr. Dave Hnida has some good advice.