San Francisco vs Beijing

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

United States
San Francisco
47
Good
China
Beijing
152
Unhealthy
MetricSan FranciscoBeijing
AQI47152
PM2.511.1 μg/m³49.7 μg/m³
PM1016.5 μg/m³56.6 μg/m³
Ozone58 ppb90 ppb
NO28.4 ppb57.5 ppb

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