San Antonio vs Chicago

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

United States
San Antonio
52
Moderate
United States
Chicago
61
Moderate
MetricSan AntonioChicago
AQI5261
PM2.57.8 μg/m³14.2 μg/m³
PM1010.2 μg/m³14.5 μg/m³
Ozone112 ppb86 ppb
NO21.5 ppb25.8 ppb

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