San Diego vs Shanghai

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

United States
San Diego
48
Good
China
Shanghai
56
Moderate
MetricSan DiegoShanghai
AQI4856
PM2.59.4 μg/m³31.5 μg/m³
PM1011.4 μg/m³33.3 μg/m³
Ozone36 ppb10 ppb
NO217.1 ppb70.4 ppb

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