Hanoi vs Seattle

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

Vietnam
Hanoi
99
Moderate
United States
Seattle
59
Moderate
MetricHanoiSeattle
AQI9959
PM2.526.7 μg/m³12.9 μg/m³
PM1028.2 μg/m³16.6 μg/m³
Ozone54 ppb82 ppb
NO229.3 ppb11 ppb

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