Worst air pollution Eau Claire, today and tomorrow
Today (16 July): Air quality in Eau Claire is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 6:00 AM (O3: 37.0/100).
Tomorrow (17 July 2026): Air quality in Eau Claire is fair. All pollutants stay as today. Pollution peaks around 7:00 AM (O3: 30.4/100). 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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Eau Claire's air quality benefits from the flat western Wisconsin terrain providing generally good wind dispersal, with vehicle emissions from I-94 and the Chippewa River valley contributing local sources in this mid-sized university city. Regional ozone from agricultural and industrial sources across the Upper Midwest airshed can elevate summer readings, while the surrounding Wisconsin forest provides a clean-air backdrop on most days.
Today - 16 July | Pollution peaks at 06:00
AQI:
Fair
37.0/100
PM2.5 (fine particles):
Good
9.3/100
PM10 (coarse particles):
Good
4.2/100
NO2 (nitrogen dioxide):
Good
13.8/100
O3 (ozone):
Fair
37.0/100
SO2 (sulfur dioxide):
Good
3.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.5/100
PM1 (ultrafine particles):
Good
7.9/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 07:00
AQI:
Fair
30.4/100
PM2.5 (fine particles):
Good
9.1/100
PM10 (coarse particles):
Good
4.0/100
NO2 (nitrogen dioxide):
Good
17.1/100
O3 (ozone):
Fair
30.4/100
SO2 (sulfur dioxide):
Good
2.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.4/100
PM1 (ultrafine particles):
Good
7.6/100
Pollen forecast in Eau Claire
View pollen forecastFrequently Asked Questions
Is air quality bad in Eau Claire right now?
On 16 July 2026, overall air quality in Eau Claire is fair. AQI is the main air quality indicator at 37.0/100. Pollution peaks around 6:00 AM (O3: 37.0/100).
Will air quality be worse tomorrow in Eau Claire?
On 17 July 2026, air quality conditions in Eau Claire will be similar to today, with AQI forecast at fair at 30.4/100. Pollution peaks around 7:00 AM (O3: 30.4/100).
When is air pollution at its worst in Eau Claire?
Conditions in Eau Claire vary noticeably across the seasons. Typically, spring and autumn tend to bring the cleanest, most stable air, while 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 Eau Claire 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