Worst air pollution Downtown Peoria - Peoria, today and tomorrow
Today (9 August): Air quality in Downtown Peoria is fair. PM2.5, O3, and PM1 are fair; AQI and NO2 are medium; PM10, SO2, CO, and HCHO are good. Pollution peaks around 11:00 PM (NO2: 44.5/100).
Tomorrow (10 August 2026): Air quality in Downtown Peoria is fair. PM1 decreases to medium; all other pollutants stay as today. Pollution peaks around 12:00 AM (NO2: 45.4/100). Airmine updates local air quality forecasts four times daily.
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Peoria's citywide air quality pattern extends to Downtown Peoria, the city's riverfront downtown along the Illinois River, without a notably different local signature. As with most sublevel sites, the broader city trend is the best guide to typical conditions here.
Today - 9 August | Pollution peaks at 23:00
AQI:
Medium
44.5/100
PM2.5 (fine particles):
Fair
27.4/100
PM10 (coarse particles):
Good
8.0/100
NO2 (nitrogen dioxide):
Medium
44.5/100
O3 (ozone):
Fair
38.1/100
SO2 (sulfur dioxide):
Good
5.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.9/100
PM1 (ultrafine particles):
Fair
33.0/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 00:00
AQI:
Medium
45.4/100
PM2.5 (fine particles):
Fair
35.3/100
PM10 (coarse particles):
Good
12.4/100
NO2 (nitrogen dioxide):
Medium
45.4/100
O3 (ozone):
Fair
36.1/100
SO2 (sulfur dioxide):
Good
5.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.6/100
PM1 (ultrafine particles):
Medium
40.0/100
Other Landmarks in Peoria
Frequently Asked Questions
Is air quality bad in Downtown Peoria right now?
On 9 August 2026, overall air quality in Downtown Peoria is fair. O3 is the main pollutant at 38.1/100. Pollution peaks around 11:00 PM (NO2: 44.5/100).
Will air quality be worse tomorrow in Downtown Peoria?
On 10 August 2026, air quality conditions in Downtown Peoria will be similar to today, with O3 forecast at fair at 36.1/100. Pollution peaks around 12:00 AM (NO2: 45.4/100).
When is air pollution at its worst in Downtown Peoria?
Air quality around Downtown Peoria changes with the seasons. Typically, between summer ozone and occasional winter inversions, spring and fall are the year's cleanest stretch, while 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 Downtown Peoria 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: 10 August 2026 at 02:34 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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