San Francisco vs Shanghai

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

United States
San Francisco
56
Moderate
China
Shanghai
85
Moderate
MetricSan FranciscoShanghai
AQI5685
PM2.510.9 μg/m³33.9 μg/m³
PM1016.5 μg/m³34.7 μg/m³
Ozone46 ppb34 ppb
NO25.3 ppb63.8 ppb

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