Worst air pollution The 606 Trail - Chicago, today and tomorrow
Today (18 July): Air quality in The 606 Trail 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: 37.7/100).
Tomorrow (19 July 2026): Air quality in The 606 Trail is fair. All pollutants stay as today. Pollution peaks around 10:00 AM (O3: 37.3/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Chicago's 606 Trail air quality reflects the elevated park rail-to-trail conversion across Wicker Park, Bucktown, and Logan Square, with vehicle traffic on the arterial streets below and the surrounding dense residential character contributing local sources. The trail's elevated position provides marginally better dispersal than the street canyon below, while the neighbourhood's walkable character and the urban character maintain consistent moderate Chicago inner urban readings throughout most of the year.
Today - 18 July | Pollution peaks at 08:00
AQI:
Fair
37.7/100
PM2.5 (fine particles):
Good
12.0/100
PM10 (coarse particles):
Good
7.3/100
NO2 (nitrogen dioxide):
Good
14.6/100
O3 (ozone):
Fair
37.7/100
SO2 (sulfur dioxide):
Good
0.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
7.3/100
PM1 (ultrafine particles):
Good
8.1/100
Levels show the poorest local air quality during the day
Tomorrow - 19 July | Pollution peaks at 10:00
AQI:
Fair
37.3/100
PM2.5 (fine particles):
Good
12.9/100
PM10 (coarse particles):
Good
8.9/100
NO2 (nitrogen dioxide):
Good
8.1/100
O3 (ozone):
Fair
37.3/100
SO2 (sulfur dioxide):
Good
0.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.7/100
PM1 (ultrafine particles):
Good
8.0/100
Other Landmarks in Chicago
Sports venues in Chicago
Frequently Asked Questions
Is air quality bad in The 606 Trail right now?
On 18 July 2026, overall air quality in The 606 Trail is fair. AQI is the main air quality indicator at 37.7/100. Pollution peaks around 8:00 AM (O3: 37.7/100).
Will air quality be worse tomorrow in The 606 Trail?
On 19 July 2026, air quality conditions in The 606 Trail will be similar to today, with AQI forecast at fair at 37.3/100. Pollution peaks around 10:00 AM (O3: 37.3/100).
When is air pollution at its worst in The 606 Trail?
At The 606 Trail, air quality tends to follow Chicago's broader seasonal rhythm: between summer ozone and occasional winter inversions, spring and fall are the year's cleanest stretch, but the hottest, most humid summer days bring the year's worst ozone readings. Calm, cold winter spells can occasionally allow local pollution to build up before the next weather system clears it.
Are air quality levels in The 606 Trail 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: 18 July 2026 at 21:30 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