Worst air pollution Mount Prospect, today and tomorrow
Today (16 July): Air quality in Mount Prospect is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 PM (O3: 36.0/100).
Tomorrow (17 July 2026): Air quality in Mount Prospect is fair. NO2 increases to fair; all other pollutants stay as today. Pollution peaks around 12:00 PM (O3: 37.9/100). 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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Mount Prospect's air quality reflects the flat Illinois prairie northwest of Chicago adjacent to O'Hare Airport, with vehicle emissions from I-90 and the surrounding suburban residential and commercial corridor contributing local sources alongside the airport's aviation emissions. The flat Illinois prairie allows reasonable dispersal, while the O'Hare Airport's approach corridors make Mount Prospect one of the Chicago area's more aviation-influenced suburban communities and the broader metropolitan ozone burden affects summer readings throughout the year.
Today - 16 July | Pollution peaks at 12:00
AQI:
Fair
36.0/100
PM2.5 (fine particles):
Good
13.0/100
PM10 (coarse particles):
Good
13.9/100
NO2 (nitrogen dioxide):
Good
14.7/100
O3 (ozone):
Fair
36.0/100
SO2 (sulfur dioxide):
Good
1.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.1/100
PM1 (ultrafine particles):
Good
6.0/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 12:00
AQI:
Fair
37.9/100
PM2.5 (fine particles):
Good
9.5/100
PM10 (coarse particles):
Good
5.8/100
NO2 (nitrogen dioxide):
Fair
21.4/100
O3 (ozone):
Fair
37.9/100
SO2 (sulfur dioxide):
Good
1.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
8.3/100
PM1 (ultrafine particles):
Good
6.2/100
Pollen forecast in Mount Prospect
View pollen forecastFrequently Asked Questions
Is air quality bad in Mount Prospect right now?
On 16 July 2026, overall air quality in Mount Prospect is fair. AQI is the main air quality indicator at 36.0/100. Pollution peaks around 12:00 PM (O3: 36.0/100).
Will air quality be worse tomorrow in Mount Prospect?
On 17 July 2026, air quality conditions in Mount Prospect will be similar to today, with AQI forecast at fair at 37.9/100. Pollution peaks around 12:00 PM (O3: 37.9/100).
When is air pollution at its worst in Mount Prospect?
Mount Prospect's air quality has a clear seasonal rhythm, as between summer ozone and occasional winter inversions, spring and fall are the year's cleanest stretch; by contrast, hot, humid summer conditions drive ozone formation, especially during heat waves. Lake-effect winds can help clear the air on many days near the Great Lakes shoreline.
Are air quality levels in Mount Prospect 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