Denver vs Colorado Springs Air Quality Comparison
Which city has cleaner air right now, from the latest EPA AirNow AQI
As of September 16, 2026, Colorado Springs, CO has cleaner air than Denver, CO — AQI 41 (Good) vs 43 (Good), a gap of 2 AQI points in the latest EPA AirNow observations. Lower AQI means cleaner air. Denver's reading is driven by O3 and Colorado Springs's by O3.
Denver, CO
Good
Colorado Springs, CO
Good
Summary
Colorado Springs has 2 points better air quality
Colorado Springs has an AQI of 41 compared to 43
Reduce Indoor Ozone in Denver
Today's main pollutant in Denver is ground-level ozone (AQI 43). Important: standard HEPA filters do NOT remove ozone — only a purifier with a substantial activated-carbon bed adsorbs it. The biggest wins are cutting indoor sources (gas appliances, certain "ionizer" purifiers) and ventilating when outdoor ozone is low (early morning). A high-carbon unit helps with the gases and VOCs that linger indoors.
Compare activated-carbon purifiers (for gases & ozone):
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