San Antonio vs Chicago

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

United States
San Antonio
23
Good
United States
Chicago
63
Moderate
MetricSan AntonioChicago
AQI2363
PM2.55.1 μg/m³2 μg/m³
PM107.1 μg/m³2.1 μg/m³
Ozone52 ppb71 ppb
NO22 ppb6.7 ppb

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