San Francisco vs Shanghai

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

United States
San Francisco
40
Good
China
Shanghai
111
Unhealthy for Sensitive Groups
MetricSan FranciscoShanghai
AQI40111
PM2.57.5 μg/m³44.4 μg/m³
PM1011.3 μg/m³64.5 μg/m³
Ozone83 ppb21 ppb
NO24.3 ppb36.6 ppb

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