Air Quality in Colorado
Live AQI for 2 cities in Colorado. Sorted worst to best once data loads.
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2 Cities in Colorado
About Air Quality in Colorado
Air quality in Colorado is monitored by the US EPA AirNow network using certified government sensors. Data is updated hourly and reported using the US Air Quality Index (AQI) — a 0–500 scale where lower is better.
The AQI is calculated from six key pollutants: PM2.5, PM10, ground-level ozone, nitrogen dioxide, sulfur dioxide, and carbon monoxide. Learn how AQI is calculated →