San Diego vs Shanghai

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

United States
San Diego
44
Good
China
Shanghai
111
Unhealthy for Sensitive Groups
MetricSan DiegoShanghai
AQI44111
PM2.55.5 μg/m³44.4 μg/m³
PM108.8 μg/m³64.5 μg/m³
Ozone81 ppb21 ppb
NO23.1 ppb36.6 ppb

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