San Francisco vs Cairo

Live air quality comparison. San Francisco has cleaner air right now.

United States
San Francisco
40
Good
Egypt
Cairo
71
Moderate
MetricSan FranciscoCairo
AQI4071
PM2.57.5 μg/m³18.2 μg/m³
PM1011.3 μg/m³33.5 μg/m³
Ozone83 ppb31 ppb
NO24.3 ppb42.7 ppb

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