Houston vs Chicago

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

United States
Houston
69
Moderate
United States
Chicago
58
Moderate
MetricHoustonChicago
AQI6958
PM2.537 μg/m³15 μg/m³
PM1039 μg/m³15.3 μg/m³
Ozone42 ppb32 ppb
NO250.2 ppb42.2 ppb

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