San Francisco vs Cairo

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

United States
San Francisco
47
Good
Egypt
Cairo
57
Moderate
MetricSan FranciscoCairo
AQI4757
PM2.511.1 μg/m³16.2 μg/m³
PM1016.5 μg/m³25.2 μg/m³
Ozone58 ppb144 ppb
NO28.4 ppb14 ppb

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