San Diego vs Chicago

Live air quality comparison. Chicago has cleaner air right now.

United States
San Diego
59
Moderate
United States
Chicago
40
Good
MetricSan DiegoChicago
AQI5940
PM2.523.5 μg/m³10.8 μg/m³
PM1029.1 μg/m³11.7 μg/m³
Ozone17 ppb66 ppb
NO257.4 ppb13.1 ppb

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