Worst air pollution Machesney Park, today and tomorrow
Today (9 August): Air quality in Machesney Park is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 7:00 AM (O3: 34.0/100).
Tomorrow (10 August 2026): Air quality in Machesney Park is fair. All pollutants stay as today. Pollution peaks around 12:00 PM (O3: 33.4/100). Airmine updates local air quality forecasts four times daily.
Get the full experience in the Airmine app.
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Follow your pollen exposure and performance with the free Airmine–Strava integration. See your pollen and air quality exposure for every Strava activity.
Machesney Park is part of the Rockford area, long known for its machine-tool and fastener manufacturing history, though local emissions here are mostly suburban traffic. Tree cover around Starved Rock area woodlots and along the Spoon River helps trap a share of local particulates before they spread further. Short-term spikes can still occur during unusual weather or nearby construction.
Today - 9 August | Pollution peaks at 07:00
AQI:
Fair
34.0/100
PM2.5 (fine particles):
Good
5.3/100
PM10 (coarse particles):
Good
3.6/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Fair
34.0/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
4.1/100
PM1 (ultrafine particles):
Good
3.8/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 12:00
AQI:
Fair
33.4/100
PM2.5 (fine particles):
Good
6.5/100
PM10 (coarse particles):
Good
3.8/100
NO2 (nitrogen dioxide):
Good
0/100
O3 (ozone):
Fair
33.4/100
SO2 (sulfur dioxide):
Good
0/100
CO (carbon monoxide):
Good
0/100
HCHO (formaldehyde):
Good
6.7/100
PM1 (ultrafine particles):
Good
4.2/100
Pollen forecast in Machesney Park
View pollen forecastAir quality forecasts for neighbourhoods and landmarks in Machesney Park
Frequently Asked Questions
Is air quality bad in Machesney Park right now?
On 9 August 2026, overall air quality in Machesney Park is fair. AQI is the main air quality indicator at 34.0/100. Pollution peaks around 7:00 AM (O3: 34.0/100).
Will air quality be worse tomorrow in Machesney Park?
On 10 August 2026, air quality conditions in Machesney Park will be similar to today, with AQI forecast at fair at 33.4/100. Pollution peaks around 12:00 PM (O3: 33.4/100).
When is air pollution at its worst in Machesney Park?
In Machesney Park, particulate matter usually peaks in winter, driven by home heating and vehicle emissions trapped by cold, still conditions. Warmer months bring a different challenge: ozone, formed when strong sun and heat interact with local emissions. The Rock River valley here can trap cold-season emissions under calm winter conditions. Spring and fall, with milder temperatures and steadier wind, generally offer the cleanest air of the year.
Are air quality levels in Machesney 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.
Want to see air quality forecasts for other cities in United States?
Check air quality in other popular cities:
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.
Get the full experience in the Airmine app.