Worst air pollution Galena Historic District - Galena, today and tomorrow
Today (30 August): Air quality in Galena Historic District is fair. AQI, NO2, and O3 are fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 PM (NO2: 39.3/100).
Tomorrow (31 August 2026): Air quality in Galena Historic District is moderate. AQI worsens to moderate; NO2 increases to moderate; all other pollutants stay as today. Pollution peaks around 12:00 AM (NO2: 40.1/100). Airmine updates local air quality forecasts four times daily.
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Galena's Historic District air quality benefits from the elevated Jo Daviess County Illinois ridge position at 240 metres above the Galena River valley, with consistent Midwest westerly winds providing reliable ventilation. Vehicle traffic on Main Street and the surrounding historic commercial character contribute seasonal tourist sources, while the elevated ridge position and the surrounding Lead Country woodland generally maintain Galena among northwestern Illinois' more pleasant historic town environments throughout most of the year.
Today - 30 August | Pollution peaks at 23:00
AQI:
Fair
39.3/100
PM2.5 (fine particles):
Good
3.4/100
PM10 (coarse particles):
Good
1.3/100
NO2 (nitrogen dioxide):
Fair
39.3/100
O3 (ozone):
Fair
36.9/100
SO2 (sulfur dioxide):
Good
3.0/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
7.4/100
PM1 (ultrafine particles):
Good
3.5/100
Levels show the poorest local air quality during the day
Tomorrow - 31 August | Pollution peaks at 00:00
AQI:
Moderate
40.1/100
PM2.5 (fine particles):
Good
7.6/100
PM10 (coarse particles):
Good
3.9/100
NO2 (nitrogen dioxide):
Moderate
40.1/100
O3 (ozone):
Fair
36.2/100
SO2 (sulfur dioxide):
Good
3.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
7.2/100
PM1 (ultrafine particles):
Good
4.4/100
Other Landmarks in Galena
Frequently Asked Questions
Is air quality bad in Galena Historic District right now?
On 30 August 2026, overall air quality in Galena Historic District is fair. AQI is the main air quality indicator at 39.3/100. Pollution peaks around 11:00 PM (NO2: 39.3/100).
Will air quality be worse tomorrow in Galena Historic District?
On 31 August 2026, air quality conditions in Galena Historic District will be worse than today, with AQI forecast at moderate at 40.1/100. Pollution peaks around 12:00 AM (NO2: 40.1/100).
When is air pollution at its worst in Galena Historic District?
Galena Historic District's air quality follows a clear seasonal pattern. In short, spring and autumn tend to bring the cleanest, most stable air, whereas the hottest, most humid summer days bring the year's worst ozone readings. Lake-effect winds can help clear the air on many days near the Great Lakes shoreline.
Are air quality levels in Galena Historic District 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: 30 August 2026 at 14:32 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.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.
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