Worst air pollution Newton, Iowa, today and tomorrow
Today (20 September): Air quality in Newton, Iowa is moderate. AQI and NO2 are moderate; PM2.5, PM10, O3, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 4:00 PM (NO2: 49.6/100).
Tomorrow (21 September 2026): Air quality in Newton, Iowa is moderate. O3 increases to fair; all other pollutants stay as today. Pollution peaks around 5:00 PM (NO2: 48.4/100). 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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The dominant factor behind Newton's air quality is open central Iowa farmland air; air quality is generally good outside of ragweed season. None of this is unusual for a place with Newton's particular geography and climate. Checking current readings is still the best way to plan outdoor activity around Newton.
Today - 20 September | Pollution peaks at 16:00
AQI:
Moderate
49.6/100
PM2.5 (fine particles):
Good
12.0/100
PM10 (coarse particles):
Good
9.1/100
NO2 (nitrogen dioxide):
Moderate
49.6/100
O3 (ozone):
Good
18.8/100
SO2 (sulfur dioxide):
Good
0.9/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
3.2/100
PM1 (ultrafine particles):
Good
5.2/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 17:00
AQI:
Moderate
48.4/100
PM2.5 (fine particles):
Good
14.0/100
PM10 (coarse particles):
Good
9.7/100
NO2 (nitrogen dioxide):
Moderate
48.4/100
O3 (ozone):
Fair
20.7/100
SO2 (sulfur dioxide):
Good
0.8/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
6.7/100
PM1 (ultrafine particles):
Good
6.2/100
Pollen forecast in Newton, Iowa
View pollen forecastFrequently Asked Questions
Is air quality bad in Newton, Iowa right now?
On 20 September 2026, overall air quality in Newton, Iowa is moderate. AQI is the main air quality indicator at 49.6/100. Pollution peaks around 4:00 PM (NO2: 49.6/100).
Will air quality be worse tomorrow in Newton, Iowa?
On 21 September 2026, air quality conditions in Newton, Iowa will be similar to today, with AQI forecast at moderate at 48.4/100. Pollution peaks around 5:00 PM (NO2: 48.4/100).
When is air pollution at its worst in Newton, Iowa?
Seasonal changes shape air quality across Newton, as the calmest air usually arrives in winter, between planting and harvest dust events; by contrast, summer heat waves and the dust of planting and harvest seasons are the main annual concerns. Because the land is so open here, air quality tends to bounce back quickly once the wind returns.
Are air quality levels in Newton, Iowa 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: 20 September 2026 at 14:33 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.
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.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.
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