Denver vs Chicago

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

United States
Denver
47
Good
United States
Chicago
40
Good
MetricDenverChicago
AQI4740
PM2.517.5 μg/m³10.8 μg/m³
PM1019.4 μg/m³11.7 μg/m³
Ozone66 ppb66 ppb
NO220.2 ppb13.1 ppb

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