Houston vs Cairo

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

United States
Houston
53
Moderate
Egypt
Cairo
67
Moderate
MetricHoustonCairo
AQI5367
PM2.511.2 μg/m³21.2 μg/m³
PM1015 μg/m³68.2 μg/m³
Ozone107 ppb58 ppb
NO23.2 ppb20.8 ppb

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