What is the air quality in Duluth MN WI?

Duluth MN WI, United States of America has an annual US AQI of 38 (Reasonable) and average PM2.5 of 6.6 µg/m³, ranking #206 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Duluth MN WI?

October is typically the cleanest month (AQI 29) and July the most polluted (AQI 49).

Where does Duluth MN WI's air quality data come from?

PM2.5: 1998–2026 (monitors 1999–2026, satellite 1998, 2021–2022; 2026 provisional (AirNow)). Measured by government monitoring stations. Full sources are on the methodology page.

Duluth MN WI, United States of America — Air Quality & Clean City Guide 2026

Duluth MN WI Air Quality Data

Global rank	City	Continent	AQI	PM2.5
206	Duluth MN WI, United States of America	North America	AQI 38	PM2.5 6.6 µg/m³