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Air quality · United States

Colorado Air Quality (AQI) Now

32 Fair
European Air Quality Index
PM2.5
1.7µg/m³WHO limit 15
PM10
2.2µg/m³WHO limit 45
NO₂
2.7µg/m³
O₃
84µg/m³
Desert dust
0µg/m³
UV index
0.0
US AQI
42

Updated: · Source: Copernicus CAMS · Open-Meteo

Air quality in Colorado is fair right now: European Air Quality Index 32. Fine particulate matter (PM2.5) is 1.7 µg/m³, below the WHO guideline. Fine for outdoor activities; very sensitive people may reduce prolonged strenuous exercise. Pollution is expected to peak around 14:00 over the next 48 hours (index 53, moderate).

Colorado 48-hour air quality forecast

16:00: 4316:0017:00: 4018:00: 3719:00: 3420:00: 3121:00: 2822:00: 2622:0023:00: 2400:00: 2201:00: 1902:00: 1803:00: 1904:00: 2004:0005:00: 2106:00: 2007:00: 1808:00: 1409:00: 1410:00: 2110:0011:00: 3312:00: 4313:00: 5114:00: 5315:00: 5216:00: 5016:0017:00: 4518:00: 3919:00: 3420:00: 2821:00: 2322:00: 1922:0023:00: 17

Air quality near Colorado

Cleanest to most polluted.

Frequently asked questions

Is Colorado polluted today?
Air quality in Colorado is fair right now: European Air Quality Index 32. Fine for outdoor activities; very sensitive people may reduce prolonged strenuous exercise.
Is it safe to exercise outdoors in Colorado today?
Yes, air quality is fair right now; fine for outdoor exercise.
How is the air quality index calculated?
The European Air Quality Index is set by the worst of PM2.5, PM10, nitrogen dioxide, ozone and sulphur dioxide: 0–20 good, 20–40 fair, 40–60 moderate, 60–80 poor, 80–100 very poor, above 100 extremely poor.

Values are Copernicus Atmosphere Monitoring Service (CAMS) model forecasts and may differ from local monitoring stations.

Colorado air quality: details

Pollutants and recent days

Nitrogen dioxide (NO₂) is 2.7 µg/m³ and ozone (O₃) 84 µg/m³; WHO guideline values are 25 (24 h) and 100 µg/m³ (8 h).