Denver vs Fort Collins Air Quality Comparison
Which city has cleaner air right now, from the latest EPA AirNow AQI
As of November 14, 2026, Fort Collins, CO has cleaner air than Denver, CO — AQI 51 (Moderate) vs 52 (Moderate), a gap of 1 AQI points in the latest EPA AirNow observations. Lower AQI means cleaner air. Denver's reading is driven by PM2.5 and Fort Collins's by PM2.5.
Denver, CO
Moderate
Fort Collins, CO
Moderate
Summary
Fort Collins has 1 points better air quality
Fort Collins has an AQI of 51 compared to 52
Extra Protection for Denver Homes
Air quality in Denver is moderate (AQI 52), with fine particles (PM2.5) the main concern. A True-HEPA purifier gives sensitive groups — kids, seniors and anyone with asthma or allergies — cleaner air indoors on days like today.
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