Chicago vs Houston

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

United States
Chicago
58
Moderate
United States
Houston
69
Moderate
MetricChicagoHouston
AQI5869
PM2.515 μg/m³37 μg/m³
PM1015.3 μg/m³39 μg/m³
Ozone32 ppb42 ppb
NO242.2 ppb50.2 ppb

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