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Special Air Quality Statement
An Air Quality Health Advisroy has been issued for eastern portions of Yuma and Kit Carson Counties due to multiple wildfires in this area.
For More info, click HERE.

A high wind event along the northern Front Range urban corridor could affect air quality monitoring operations and web reporting systems on Wednesday. In the event of a power and data outage, we will bring these systems back up as soon as possible and update air quality forecasts accordingly.

Forecast - Air Quality Health Advisories

Air Quality Health Advisory for Wildfire Smoke
Effective: 12/17/2025 10:30:00 PM - 12/18/2025 9:00:00 AM
Affected Area: eastern Yuma and Kit Carson Counties. Locations include, but are not limited to Wray, Vernon, Idalia, and Burlington.

Public Health Recommendations: Public Health Recommendations: 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...
Outlook: Smoke from multiple wildfires will impact eastern portions of Yuma and Kit Carson Counties Wednesday night and into Thursday morning. Moderate to heavy smoke is expected in areas downwind of these...

See full Air Quality Advisory


Forecast - Denver Metro Winter Burning Restrictions

No seasonal air quality advisories at this time.
What is an action day?


Forecast - Air Quality Index

Wednesday Ozone Fine Particulates Carbon Monoxide Nitrogen Dioxide
   Denver - Boulder 
   Colorado Springs 
   Ft. Collins 
   Greeley 
   Grand Junction 
   Colorado River Valley 
   Four Corners Area 

Denver's expected visibility (Wednesday):
Thursday Ozone Fine Particulates Carbon Monoxide Nitrogen Dioxide
   Denver - Boulder 
   Colorado Springs 
   Ft. Collins 
   Greeley 
   Grand Junction 
   Colorado River Valley 
   Four Corners Area 

Denver's expected visibility (Thursday):

The AQI & VSI forecast for Thursday will be available by 4PM local time on Wednesday.



Monitoring - Air Quality Index


install on your website... Current Air Quality Conditions
Highest AQI So Far Today
Current - Wed (9AM) Ozone Fine Particulates Carbon Monoxide Nitrogen Dioxide
   Denver 
   Ft. Collins - Greeley 
   Colorado Springs 
   Grand Junction 
   Colorado River Valley 
   Four Corners 
   Other 


Denver's current visibility:
(VSI is calculated between 12PM and 4PM local time)
Highest (so far) Today Ozone Fine Particulates Carbon Monoxide Nitrogen Dioxide
   Denver 
   Ft. Collins - Greeley 
   Colorado Springs 
   Grand Junction 
   Colorado River Valley 
   Four Corners 
   Other 


Denver's highest visibility (so far) today:
(VSI is calculated between 12PM and 4PM local time)
Highest Yesterday Ozone Fine Particulates Carbon Monoxide Nitrogen Dioxide
   Denver 
   Ft. Collins - Greeley 
   Colorado Springs 
   Grand Junction 
   Colorado River Valley 
   Four Corners 
   Other 


Denver's highest visibility yesterday:
(VSI is calculated between 12PM and 4PM local time)

For a more detailed view of monitored air quality, visit the air quality today page, or create your own data report.


Other Resources

More about air quality forecasting regions...
Sign up for air quality notifications from CDPHE's automated e-mail alert system
About the Air Quality Index (AQI)
What is an Action Day?
Colorado Air Quality Map
Air Quality Report View
Live image of Denver
Air Quality Index Scale Visibility Standard Index