What is the air quality in Milwaukee WI?

Milwaukee WI, United States of America has an annual US AQI of 52 (Reasonable) and average PM2.5 of 10.7 µg/m³, ranking #979 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Milwaukee WI?

October is typically the cleanest month (AQI 44) and January the most polluted (AQI 57).

Where does Milwaukee WI's air quality data come from?

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

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

Milwaukee WI Air Quality Data

Global rank	City	Continent	AQI	PM2.5
979	Milwaukee WI, United States of America	North America	AQI 52	PM2.5 10.7 µg/m³