Philadelphia vs Chicago

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

United States
Philadelphia
60
Moderate
United States
Chicago
61
Moderate
MetricPhiladelphiaChicago
AQI6061
PM2.510.1 μg/m³4.1 μg/m³
PM1010.4 μg/m³4.2 μg/m³
Ozone130 ppb107 ppb
NO21.3 ppb6.1 ppb

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