San Diego vs Chicago

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

United States
San Diego
58
Moderate
United States
Chicago
61
Moderate
MetricSan DiegoChicago
AQI5861
PM2.515.8 μg/m³14.2 μg/m³
PM1021.7 μg/m³14.5 μg/m³
Ozone80 ppb86 ppb
NO27.1 ppb25.8 ppb

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