Denver vs Chicago

Live air quality comparison. Denver has cleaner air right now.

United States
Denver
50
Good
United States
Chicago
61
Moderate
MetricDenverChicago
AQI5061
PM2.59.2 μg/m³4.1 μg/m³
PM1010.3 μg/m³4.2 μg/m³
Ozone127 ppb107 ppb
NO21.6 ppb6.1 ppb

Lower values mean cleaner air. Updated hourly. Sources: OpenAQ, Open-Meteo.