Worst air pollution Terre Haute, today and tomorrow
Today (9 August): Air quality in Terre Haute is fair. AQI, PM2.5, NO2, and O3 are fair; PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 4:00 AM (NO2: 38.6/100).
Tomorrow (10 August 2026): Air quality in Terre Haute is fair. PM2.5 decreases to good; all other pollutants stay as today. Pollution peaks around 8:00 AM (O3: 34.8/100). 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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Terre Haute's air quality reflects the Wabash River valley's flat terrain at the Illinois-Indiana border, with vehicle emissions from I-70 and the surrounding pharmaceutical manufacturing and energy sector — including significant coal power station legacy — contributing local sources. The flat Wabash Valley provides reasonable dispersal, while summer ozone from the Ohio Valley regional airshed and industrial background from the energy corridor are the primary air quality concerns throughout the year.
Today - 9 August | Pollution peaks at 04:00
AQI:
Fair
38.6/100
PM2.5 (fine particles):
Fair
21.8/100
PM10 (coarse particles):
Good
8.2/100
NO2 (nitrogen dioxide):
Fair
38.6/100
O3 (ozone):
Fair
35.7/100
SO2 (sulfur dioxide):
Good
11.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.3/100
PM1 (ultrafine particles):
Good
16.4/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 08:00
AQI:
Fair
34.8/100
PM2.5 (fine particles):
Good
18.4/100
PM10 (coarse particles):
Good
7.2/100
NO2 (nitrogen dioxide):
Fair
33.4/100
O3 (ozone):
Fair
34.8/100
SO2 (sulfur dioxide):
Good
11.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.3/100
PM1 (ultrafine particles):
Good
13.6/100
Pollen forecast in Terre Haute
View pollen forecastAir quality forecasts for neighbourhoods and landmarks in Terre Haute
Frequently Asked Questions
Is air quality bad in Terre Haute right now?
On 9 August 2026, overall air quality in Terre Haute is fair. AQI is the main air quality indicator at 38.6/100. Pollution peaks around 4:00 AM (NO2: 38.6/100).
Will air quality be worse tomorrow in Terre Haute?
On 10 August 2026, air quality conditions in Terre Haute will be similar to today, with AQI forecast at fair at 34.8/100. Pollution peaks around 8:00 AM (O3: 34.8/100).
When is air pollution at its worst in Terre Haute?
Terre Haute sees air quality change through the year — spring and autumn tend to bring the cleanest, most stable air, whereas summer heat waves are the main driver of poor air quality, as ozone builds under stagnant, humid conditions. Calm, cold winter spells can occasionally allow local pollution to build up before the next weather system clears it.
Are air quality levels in Terre Haute 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.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
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Data provided by Airmine — Last update: 9 August 2026 at 20:27 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.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
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