Worst air pollution Peterson Park - Chicago, today and tomorrow
Today (9 August): Air quality in Peterson Park is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 8:00 AM (O3: 32.8/100).
Tomorrow (10 August 2026): Air quality in Peterson Park is fair. All pollutants stay as today. Pollution peaks around 9:00 AM (O3: 34.7/100). Airmine updates local air quality forecasts four times daily.
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In Peterson Park, congested streets and dense urban activity keep particulate matter and nitrogen dioxide readings consistently on the higher side. Green space some 215m away provides modest natural relief, filtering a portion of this particulate load. Actual daily readings vary with weather, time of day, and short-term local activity.
Today - 9 August | Pollution peaks at 08:00
AQI:
Fair
32.8/100
PM2.5 (fine particles):
Good
5.8/100
PM10 (coarse particles):
Good
1.8/100
NO2 (nitrogen dioxide):
Good
6.2/100
O3 (ozone):
Fair
32.8/100
SO2 (sulfur dioxide):
Good
0.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.0/100
PM1 (ultrafine particles):
Good
7.1/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 09:00
AQI:
Fair
34.7/100
PM2.5 (fine particles):
Good
6.8/100
PM10 (coarse particles):
Good
3.7/100
NO2 (nitrogen dioxide):
Good
13.9/100
O3 (ozone):
Fair
34.7/100
SO2 (sulfur dioxide):
Good
0.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.7/100
PM1 (ultrafine particles):
Good
4.7/100
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Frequently Asked Questions
Is air quality bad in Peterson Park right now?
On 9 August 2026, overall air quality in Peterson Park is fair. AQI is the main air quality indicator at 32.8/100. Pollution peaks around 8:00 AM (O3: 32.8/100).
Will air quality be worse tomorrow in Peterson Park?
On 10 August 2026, air quality conditions in Peterson Park will be similar to today, with AQI forecast at fair at 34.7/100. Pollution peaks around 9:00 AM (O3: 34.7/100).
When is air pollution at its worst in Peterson Park?
The colder months typically bring the heaviest particulate levels of the year to this area, when dense traffic emissions and home heating pile up under temperature inversions that resist mixing. Warmer months bring a different problem here: ground-level ozone, since dense traffic emissions combined with intense sun and heat fuel ozone formation across the city.
Are air quality levels in Peterson Park 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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