Phoenix vs Chicago

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

United States
Phoenix
50
Good
United States
Chicago
61
Moderate
MetricPhoenixChicago
AQI5061
PM2.513.4 μg/m³4.1 μg/m³
PM1051.2 μg/m³4.2 μg/m³
Ozone111 ppb107 ppb
NO21.9 ppb6.1 ppb

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