What is the air quality in St. Paul MN?

St. Paul MN, United States of America has an annual US AQI of 48 (Reasonable) and average PM2.5 of 9.3 µg/m³, ranking #618 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in St. Paul MN?

October is typically the cleanest month (AQI 40) and February the most polluted (AQI 55).

Where does St. Paul MN's air quality data come from?

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

St. Paul MN, United States of America — Air Quality & Clean City Guide 2026

St. Paul MN Air Quality Data

Global rank	City	Continent	AQI	PM2.5
618	St. Paul MN, United States of America	North America	AQI 48	PM2.5 9.3 µg/m³