San Francisco vs Shanghai

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

United States
San Francisco
47
Good
China
Shanghai
56
Moderate
MetricSan FranciscoShanghai
AQI4756
PM2.511.1 μg/m³31.5 μg/m³
PM1016.5 μg/m³33.3 μg/m³
Ozone58 ppb10 ppb
NO28.4 ppb70.4 ppb

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