Worst air pollution Waterloo, today and tomorrow
Today (16 July): Air quality in Waterloo is fair. AQI, NO2, and O3 are fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 PM (O3: 36.3/100).
Tomorrow (17 July 2026): Air quality in Waterloo is fair. All pollutants stay as today. Pollution peaks around 12:00 PM (O3: 38.8/100). 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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Waterloo's air quality in Iowa benefits from the flat northern Iowa prairie providing excellent wind dispersal, with vehicle emissions from US-218 and the John Deere manufacturing and meatpacking industry contributing distinctive agricultural and industrial PM2.5 alongside the primary local vehicle sources. Agricultural ammonia from surrounding Cedar Valley corn and hog operations contributes secondary particulate formation.
Today - 16 July | Pollution peaks at 12:00
AQI:
Fair
36.3/100
PM2.5 (fine particles):
Good
17.6/100
PM10 (coarse particles):
Good
14.1/100
NO2 (nitrogen dioxide):
Fair
21.8/100
O3 (ozone):
Fair
36.3/100
SO2 (sulfur dioxide):
Good
3.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.4/100
PM1 (ultrafine particles):
Good
7.9/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 12:00
AQI:
Fair
38.8/100
PM2.5 (fine particles):
Good
14.6/100
PM10 (coarse particles):
Good
11.8/100
NO2 (nitrogen dioxide):
Fair
23.0/100
O3 (ozone):
Fair
38.8/100
SO2 (sulfur dioxide):
Good
4.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
8.0/100
PM1 (ultrafine particles):
Good
8.6/100
Pollen forecast in Waterloo
View pollen forecastFrequently Asked Questions
Is air quality bad in Waterloo right now?
On 16 July 2026, overall air quality in Waterloo is fair. AQI is the main air quality indicator at 36.3/100. Pollution peaks around 12:00 PM (O3: 36.3/100).
Will air quality be worse tomorrow in Waterloo?
On 17 July 2026, air quality conditions in Waterloo will be similar to today, with AQI forecast at fair at 38.8/100. Pollution peaks around 12:00 PM (O3: 38.8/100).
When is air pollution at its worst in Waterloo?
Waterloo sees air quality change through the year. In short, the cleanest conditions usually come in winter, once the growing season dust and pollen have passed, whereas summer heat and humidity drive ozone formation, and agricultural dust can spike particulate levels during planting and harvest. Farm-heavy surrounding land is the main source of the seasonal dust spikes.
Are air quality levels in Waterloo 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