Worst air pollution Seymour, today and tomorrow
Today (9 August): Air quality in Seymour is fair. AQI, NO2, and O3 are fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 1:00 AM (NO2: 33.2/100).
Tomorrow (10 August 2026): Air quality in Seymour is fair. NO2 decreases to good; all other pollutants stay as today. Pollution peaks around 9:00 AM (O3: 36.0/100). 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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Open south-central indiana air is what shapes air quality most in Seymour, and fall ragweed is the biggest seasonal pollen event. That mix of factors is fairly representative of towns in this part of the country. Short-term spikes are still possible even during the generally cleaner stretches of the year.
Today - 9 August | Pollution peaks at 01:00
AQI:
Fair
33.2/100
PM2.5 (fine particles):
Good
19.0/100
PM10 (coarse particles):
Good
7.1/100
NO2 (nitrogen dioxide):
Fair
33.2/100
O3 (ozone):
Fair
32.4/100
SO2 (sulfur dioxide):
Good
10.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.4/100
PM1 (ultrafine particles):
Good
13.4/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 09:00
AQI:
Fair
36.0/100
PM2.5 (fine particles):
Good
17.2/100
PM10 (coarse particles):
Good
7.0/100
NO2 (nitrogen dioxide):
Good
17.5/100
O3 (ozone):
Fair
36.0/100
SO2 (sulfur dioxide):
Good
8.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.3/100
PM1 (ultrafine particles):
Good
11.1/100
Pollen forecast in Seymour
View pollen forecastFrequently Asked Questions
Is air quality bad in Seymour right now?
On 9 August 2026, overall air quality in Seymour is fair. AQI is the main air quality indicator at 33.2/100. Pollution peaks around 1:00 AM (NO2: 33.2/100).
Will air quality be worse tomorrow in Seymour?
On 10 August 2026, air quality conditions in Seymour will be similar to today, with AQI forecast at fair at 36.0/100. Pollution peaks around 9:00 AM (O3: 36.0/100).
When is air pollution at its worst in Seymour?
Seymour's air quality follows a clear seasonal pattern — between summer ozone and occasional winter inversions, spring and fall are the year's cleanest stretch, whereas hot, humid summer conditions drive ozone formation, especially during heat waves. Fast-moving weather systems typical of the region usually keep pollution from lingering too long.
Are air quality levels in Seymour 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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