San Antonio vs Chicago

Live air quality comparison. San Antonio has cleaner air right now.

United States
San Antonio
38
Good
United States
Chicago
61
Moderate
MetricSan AntonioChicago
AQI3861
PM2.56.8 μg/m³4.1 μg/m³
PM109.2 μg/m³4.2 μg/m³
Ozone87 ppb107 ppb
NO21.2 ppb6.1 ppb

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