Worst air pollution Arlington Heights, today and tomorrow
Today (16 July): Air quality in Arlington Heights 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 Arlington Heights is fair. All 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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Arlington Heights' air quality reflects the flat Chicago northwestern suburban position adjacent to O'Hare Airport, with aviation and ground vehicle emissions generating elevated NOₓ and ultrafine particles alongside vehicle traffic on I-90. The flat Illinois prairie allows reasonable dispersal, while the airport's approach corridors make Arlington Heights one of the Chicago area's more aviation-influenced suburban communities and the broader Chicago 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
11.7/100
PM10 (coarse particles):
Good
12.5/100
NO2 (nitrogen dioxide):
Good
5.0/100
O3 (ozone):
Fair
36.0/100
SO2 (sulfur dioxide):
Good
0.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
6.1/100
PM1 (ultrafine particles):
Good
5.4/100
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
8.5/100
PM10 (coarse particles):
Good
5.2/100
NO2 (nitrogen dioxide):
Good
7.4/100
O3 (ozone):
Fair
37.9/100
SO2 (sulfur dioxide):
Good
0.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
8.3/100
PM1 (ultrafine particles):
Good
5.6/100
Pollen forecast in Arlington Heights
View pollen forecastFrequently Asked Questions
Is air quality bad in Arlington Heights right now?
On 16 July 2026, overall air quality in Arlington Heights 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 Arlington Heights?
On 17 July 2026, air quality conditions in Arlington Heights 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 Arlington Heights?
Arlington Heights's air quality has a clear seasonal rhythm — between summer ozone and occasional winter inversions, spring and fall are the year's cleanest stretch, whereas 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 Arlington Heights 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