San Antonio vs Chicago

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

United States
San Antonio
53
Moderate
United States
Chicago
58
Moderate
MetricSan AntonioChicago
AQI5358
PM2.58.8 μg/m³15 μg/m³
PM109.3 μg/m³15.3 μg/m³
Ozone55 ppb32 ppb
NO211.5 ppb42.2 ppb

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