Worst air pollution Grand Crossing - Chicago, today and tomorrow
Today (9 August): Air quality in Grand Crossing is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 10:00 AM (O3: 31.7/100).
Tomorrow (10 August 2026): Air quality in Grand Crossing is fair. All pollutants stay as today. Pollution peaks around 12:00 PM (O3: 32.6/100). Airmine updates local air quality forecasts four times daily.
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In Grand Crossing, road traffic and general city density are the leading contributors to particulate matter and nitrogen dioxide here. Tree cover about 0m away helps filter some of this particulate load before it settles over the neighborhood. Day-to-day readings still shift with wind direction, traffic volume, and weather conditions.
Today - 9 August | Pollution peaks at 10:00
AQI:
Fair
31.7/100
PM2.5 (fine particles):
Good
5.7/100
PM10 (coarse particles):
Good
2.0/100
NO2 (nitrogen dioxide):
Good
12.5/100
O3 (ozone):
Fair
31.7/100
SO2 (sulfur dioxide):
Good
2.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.7/100
PM1 (ultrafine particles):
Good
5.4/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 12:00
AQI:
Fair
32.6/100
PM2.5 (fine particles):
Good
8.6/100
PM10 (coarse particles):
Good
4.1/100
NO2 (nitrogen dioxide):
Good
13.1/100
O3 (ozone):
Fair
32.6/100
SO2 (sulfur dioxide):
Good
2.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.7/100
PM1 (ultrafine particles):
Good
6.6/100
Other Landmarks in Chicago
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Frequently Asked Questions
Is air quality bad in Grand Crossing right now?
On 9 August 2026, overall air quality in Grand Crossing is fair. AQI is the main air quality indicator at 31.7/100. Pollution peaks around 10:00 AM (O3: 31.7/100).
Will air quality be worse tomorrow in Grand Crossing?
On 10 August 2026, air quality conditions in Grand Crossing will be similar to today, with AQI forecast at fair at 32.6/100. Pollution peaks around 12:00 PM (O3: 32.6/100).
When is air pollution at its worst in Grand Crossing?
Winter tends to bring the year's worst particulate spikes here, when dense traffic emissions and home heating pile up under temperature inversions that resist mixing. By summer, ozone becomes the more pressing urban issue, which forms readily from traffic emissions baking in strong sunlight, and can spike further during wildfire smoke events.
Are air quality levels in Grand Crossing 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: 10 August 2026 at 02:34 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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