Worst air pollution South Bend, today and tomorrow
Today (16 July): Air quality in South Bend is fair. O3 is fair; AQI and NO2 are medium; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 1:00 AM (NO2: 49.2/100).
Tomorrow (17 July 2026): Air quality in South Bend is fair. All pollutants stay as today. Pollution peaks around 11:00 PM (NO2: 52.8/100). 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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South Bend's air quality reflects the flat northern Indiana terrain providing generally good wind dispersal, with vehicle emissions from I-80 and I-90 and the surrounding automotive and manufacturing legacy of the Studebaker corridor contributing elevated PM2.5. Lake Michigan's influence provides limited northwestern maritime ventilation, while summer regional ozone from the industrial Great Lakes corridor and agricultural sources across northern Indiana is the primary warm-season concern.
Today - 16 July | Pollution peaks at 01:00
AQI:
Medium
49.2/100
PM2.5 (fine particles):
Good
17.8/100
PM10 (coarse particles):
Good
18.3/100
NO2 (nitrogen dioxide):
Medium
49.2/100
O3 (ozone):
Fair
36.7/100
SO2 (sulfur dioxide):
Good
9.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.5/100
PM1 (ultrafine particles):
Good
11.9/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 23:00
AQI:
Medium
52.8/100
PM2.5 (fine particles):
Good
11.5/100
PM10 (coarse particles):
Good
4.7/100
NO2 (nitrogen dioxide):
Medium
52.8/100
O3 (ozone):
Fair
37.6/100
SO2 (sulfur dioxide):
Good
3.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.2/100
PM1 (ultrafine particles):
Good
9.5/100
Pollen forecast in South Bend
View pollen forecastFrequently Asked Questions
Is air quality bad in South Bend right now?
On 16 July 2026, overall air quality in South Bend is fair. O3 is the main pollutant at 36.7/100. Pollution peaks around 1:00 AM (NO2: 49.2/100).
Will air quality be worse tomorrow in South Bend?
On 17 July 2026, air quality conditions in South Bend will be similar to today, with O3 forecast at fair at 37.6/100. Pollution peaks around 11:00 PM (NO2: 52.8/100).
When is air pollution at its worst in South Bend?
Like most US cities, South Bend sees air quality shift from season to season, as between summer ozone and occasional winter inversions, spring and fall are the year's cleanest stretch; by contrast, 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 South Bend 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