Philadelphia vs Chicago

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

United States
Philadelphia
61
Moderate
United States
Chicago
58
Moderate
MetricPhiladelphiaChicago
AQI6158
PM2.539.1 μg/m³15 μg/m³
PM1039.5 μg/m³15.3 μg/m³
Ozone0 ppb32 ppb
NO271.8 ppb42.2 ppb

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