Boston vs Beijing

Live air quality comparison. Boston has cleaner air right now.

United States
Boston
40
Good
China
Beijing
152
Unhealthy
MetricBostonBeijing
AQI40152
PM2.54.8 μg/m³49.7 μg/m³
PM105 μg/m³56.6 μg/m³
Ozone58 ppb90 ppb
NO23.4 ppb57.5 ppb

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