Duluth, Minnesota Air Quality
Real-time air quality index (AQI) and pollution data
Population: 119,372 • County: St. Louis
Current AQI
Health Recommendation
Air quality is satisfactory, and air pollution poses little or no risk.
It's a great day to be active outside!
5-Day AQI Forecast
Last 90 Days
Current Pollutant Levels
Real-time data from EPA AirNow
Local Air Quality Context
Air quality data for Duluth is sourced from the West Duluth monitoring area, located approximately 3 miles from city center. This EPA-certified station continuously tracks particulate matter (PM2.5), the primary driver of air quality alerts in this area.
Major roadways in the area include I-35, US-2, US-53, and MN-23. Heavy vehicle traffic on these corridors is a primary source of nitrogen dioxide, carbon monoxide, and fine particulate matter (PM2.5).
Key local pollution sources include Duluth shipping canal, taconite processing (iron ore), vehicle traffic, and Lake Superior inversions.
Frequently Asked Questions About Duluth Air Quality
What is the air quality in Duluth today?
The current AQI in Duluth is 19, rated "Good". Air quality is good — outdoor activity is safe for everyone today. Air quality is satisfactory, and air pollution poses little or no risk.
Air Quality Grade
Better than 0% of US cities
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