Search CDPHE Translate

Colorado Air Quality Summary

About the Air Quality Index (AQI)
Today's Air Quality Summary (detailed)
Front Range Air Quality ForecastSmoke Outlook

Air Quality Advisories

Key
Air Quality Index Scale

Visibility Standard Index

What is an Action Day?

Current - Air Quality Summary

install on your website... Current Air Quality Conditions
Highest AQI So Far Today


Denver's current visibility:
Ft. Collins' current visibility:
(VSI is calculated between 12PM and 4PM local time)


More about air quality forecasting regions...
Forecast - Air Quality Summary

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

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