FRONT RANGE AIR QUALITY FORECAST:
Tuesday, July 8, 2025, 2:15 PM MDT
Ozone concentrations are expected to be in the Good to Moderate range on Tuesday, and in the Moderate to Unhealthy for Sensitive Groups range on Wednesday. The highest concentrations of ozone are expected in the northern portions of the Front Range region.
Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy outdoor exertion from noon until 8 pm on Wednesday.
Additionally, throughout the Colorado Front Range,
people who are unusually sensitive to ozone should consider reducing prolonged or heavy outdoor exertion from noon until 10 pm on Tuesday and Wednesday.
Fine Particulate Matter concentrations are expected to be in the Good category on Tuesday and Wednesday.
Carbon Monoxide concentrations are expected to be in the Good category on Tuesday and Wednesday.
Nitrogen Dioxide concentrations are expected to be in the Good category on Tuesday and Wednesday.
Visibility on Wednesday is expected to be Good to Moderate.
COLORADO SMOKE OUTLOOK:
Thursday, July 11, 2024, 8:40 AM MDT
Smoke from out-of-state fires will begin affect northern Colorado by late Thursday morning, and is expected to continue spreading eastward as the day goes on. The majority of smoke will remain in the upper atmosphere, although some will mix down to the surface. Hazy skies are likely across much of northern and western Colorado. Light to moderate smoke is possible Thursday in northwest Colorado, especially Steamboat Springs, Craig, and Meeker.
No major public health impacts are expected due to smoke (fine particulates), however unusually sensitive people, should consider reducing prolonged or heavy exertion on Thursday.
Light to moderate concentrations of smoke are also possible near small wildfires and prescribed burns around the state.
What if there is a wildfire or smoke in your area?
The focus of the Colorado Smoke Outlook is on large fires (e.g., greater than 100 acres in size). Nevertheless, smoke from smaller fires, prescribed fires, and/or smoke from new fires not yet known to CDPHE air quality meteorologists may cause locally heavy smoke. If there is smoke in your neighborhood, see the public health recommendations below.
Public health recommendations for areas affected by smoke:
If smoke is thick or becomes thick in your neighborhood you may want to remain indoors. This is especially true for those with heart disease, respiratory illnesses, the very young, and the elderly. Consider limiting outdoor activity when moderate to heavy smoke is present. Consider relocating temporarily if smoke is present indoors and is making you ill. To temporarily relocate to an area with better air quality, consider using this map (https://fire.airnow.gov/) to identify the best area closest to you. IF VISIBILITY IS LESS THAN 5 MILES IN SMOKE IN YOUR NEIGHBORHOOD, SMOKE HAS REACHED LEVELS THAT ARE UNHEALTHY.
