Worst air pollution Madison, today and tomorrow
Today (16 July): Air quality in Madison 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 Madison 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.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Madison's air quality benefits from Lake Mendota and Lake Monona's consistent lake winds providing natural ventilation across this isthmus city, with generally good readings for a Midwest US metropolitan area. Vehicle emissions from the Beltline Highway are the primary local source, while regional ozone from agricultural and industrial sources across the Upper Midwest can temporarily elevate summer readings across the metropolitan area.
Today - 16 July | Pollution peaks at 10:00
AQI:
Fair
33.2/100
PM2.5 (fine particles):
Good
5.6/100
PM10 (coarse particles):
Good
3.2/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Fair
33.2/100
SO2 (sulfur dioxide):
Good
0.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.8/100
PM1 (ultrafine particles):
Good
3.9/100
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
3.6/100
PM10 (coarse particles):
Good
1.4/100
NO2 (nitrogen dioxide):
Good
0.1/100
O3 (ozone):
Fair
27.6/100
SO2 (sulfur dioxide):
Good
0.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.9/100
PM1 (ultrafine particles):
Good
2.6/100
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Frequently Asked Questions
Is air quality bad in Madison right now?
On 16 July 2026, overall air quality in Madison 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 Madison?
On 17 July 2026, air quality conditions in Madison 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 Madison?
Madison experiences a distinct seasonal swing in air quality. In short, between summer ozone and occasional winter inversions, spring and fall are the year's cleanest stretch, whereas prolonged summer heat waves are when air quality most often dips into unhealthy territory. Calm, cold winter spells can occasionally allow local pollution to build up before the next weather system clears it.
Are air quality levels in Madison 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