Hanoi vs Seattle

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

Vietnam
Hanoi
148
Unhealthy for Sensitive Groups
United States
Seattle
28
Good
MetricHanoiSeattle
AQI14828
PM2.560.8 μg/m³3.4 μg/m³
PM1061 μg/m³4.3 μg/m³
Ozone68 ppb51 ppb
NO230.3 ppb3.8 ppb

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