Worst air pollution Milwaukee, today and tomorrow
Today (16 July): Air quality in Milwaukee is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 10:00 AM (O3: 33.2/100).
Tomorrow (17 July 2026): Air quality in Milwaukee is fair. All pollutants stay as today. Pollution peaks around 7:00 AM (O3: 27.6/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Milwaukee's air quality reflects Lake Michigan's powerful westerly and northerly lake winds that provide consistent ventilation along the lakefront, with the primary concerns being industrial emissions from the Menomonee Valley manufacturing corridor and vehicle traffic on the I-894 and I-43 beltways. Summer ozone from regional Great Lakes industrial sources elevates readings periodically across the wider metro.
Today - 16 July | Pollution peaks at 10:00
AQI:
Fair
33.2/100
PM2.5 (fine particles):
Good
7.7/100
PM10 (coarse particles):
Good
4.4/100
NO2 (nitrogen dioxide):
Good
12.3/100
O3 (ozone):
Fair
33.2/100
SO2 (sulfur dioxide):
Good
0.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.8/100
PM1 (ultrafine particles):
Good
5.4/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 07:00
AQI:
Fair
27.6/100
PM2.5 (fine particles):
Good
5.0/100
PM10 (coarse particles):
Good
1.9/100
NO2 (nitrogen dioxide):
Good
10.0/100
O3 (ozone):
Fair
27.6/100
SO2 (sulfur dioxide):
Good
0.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.9/100
PM1 (ultrafine particles):
Good
3.6/100
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Frequently Asked Questions
Is air quality bad in Milwaukee right now?
On 16 July 2026, overall air quality in Milwaukee is fair. AQI is the main air quality indicator at 33.2/100. Pollution peaks around 10:00 AM (O3: 33.2/100).
Will air quality be worse tomorrow in Milwaukee?
On 17 July 2026, air quality conditions in Milwaukee will be similar to today, with AQI forecast at fair at 27.6/100. Pollution peaks around 7:00 AM (O3: 27.6/100).
When is air pollution at its worst in Milwaukee?
Milwaukee sees air quality change through the year — the cleanest stretches usually come in spring and fall, between the summer ozone season and the calmer winter pollution episodes, whereas summer heat waves are the main driver of poor air quality, as ozone builds under stagnant, humid conditions. Lake-effect winds can help clear the air on many days near the Great Lakes shoreline.
Are air quality levels in Milwaukee based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 CEST (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
For long term forecasts and maps, see the Airmine app