Denver vs Chicago

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

United States
Denver
63
Moderate
United States
Chicago
58
Moderate
MetricDenverChicago
AQI6358
PM2.54.3 μg/m³15 μg/m³
PM105.5 μg/m³15.3 μg/m³
Ozone44 ppb32 ppb
NO214.1 ppb42.2 ppb

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