San Francisco vs Shanghai

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

United States
San Francisco
51
Moderate
China
Shanghai
82
Moderate
MetricSan FranciscoShanghai
AQI5182
PM2.59.6 μg/m³28.1 μg/m³
PM1014.8 μg/m³34.6 μg/m³
Ozone67 ppb68 ppb
NO27 ppb44 ppb

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