What is the air quality like in Duluth?
Duluth has an average AQI of 34, which falls in the "Good" category. About 80% of days have Good air quality, 16% are Moderate, and 3% are Unhealthy for Sensitive Groups. The primary pollutant is PM2.5.
What is the main pollutant in Duluth?
The primary pollutant in Duluth is PM2.5. The city's average PM2.5 level is 5.8 μg/m³ (below the EPA annual standard of 12 μg/m³). Average ozone levels are 28 ppb. Major pollution sources include vehicles, port, taconite processing.
Is Duluth affected by wildfire smoke?
Duluth has a low wildfire risk rating. Wildfire smoke rarely impacts air quality here.
How many good air quality days does Duluth have?
Approximately 80% of days in Duluth have Good air quality (AQI 0-50). This means the majority of the year has clean, breathable air.
When is pollen season in Duluth's state (MN)?
Pollen seasons in MN include: Tree Pollen (April–June, Moderate severity); Weed Pollen (August–September, High severity); Mold Spores (June–October, Moderate severity); Grass Pollen (May–July, Moderate severity). Allergy sufferers should monitor pollen counts during these periods and consider staying indoors on high-pollen days, especially during morning hours when counts peak.