Phoenix vs Chicago

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

United States
Phoenix
19
Good
United States
Chicago
58
Moderate
MetricPhoenixChicago
AQI1958
PM2.52 μg/m³15 μg/m³
PM102 μg/m³15.3 μg/m³
Ozone39 ppb32 ppb
NO26.2 ppb42.2 ppb

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