Hanoi vs Seattle

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

Vietnam
Hanoi
153
Unhealthy
United States
Seattle
59
Moderate
MetricHanoiSeattle
AQI15359
PM2.583.4 μg/m³7.2 μg/m³
PM1083.8 μg/m³7.7 μg/m³
Ozone59 ppb47 ppb
NO249.3 ppb21.8 ppb

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