Chicago vs Houston

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

United States
Chicago
61
Moderate
United States
Houston
53
Moderate
MetricChicagoHouston
AQI6153
PM2.514.2 μg/m³11.2 μg/m³
PM1014.5 μg/m³15 μg/m³
Ozone86 ppb107 ppb
NO225.8 ppb3.2 ppb

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