Worst air pollution Glenwood Springs, today and tomorrow
Today (20 September): Air quality in Glenwood Springs is moderate. AQI and NO2 are moderate; PM2.5 and O3 are fair; PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 2:00 PM (NO2: 41.2/100).
Tomorrow (21 September 2026): Air quality in Glenwood Springs is moderate. All pollutants stay as today. Pollution peaks around 7:00 PM (NO2: 46.2/100). 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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In Glenwood Springs, clean western Colorado mountain-valley air is the main influence on air quality, and winter cold-air inversions can occasionally trap haze in the valley. None of this is unusual for a place with Glenwood Springs's particular geography and climate. Short-term spikes are still possible even during the generally cleaner stretches of the year.
Today - 20 September | Pollution peaks at 14:00
AQI:
Moderate
41.2/100
PM2.5 (fine particles):
Fair
33.0/100
PM10 (coarse particles):
Good
16.7/100
NO2 (nitrogen dioxide):
Moderate
41.2/100
O3 (ozone):
Fair
30.7/100
SO2 (sulfur dioxide):
Good
1.7/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
3.3/100
PM1 (ultrafine particles):
Good
5.4/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 19:00
AQI:
Moderate
46.2/100
PM2.5 (fine particles):
Fair
30.4/100
PM10 (coarse particles):
Good
16.3/100
NO2 (nitrogen dioxide):
Moderate
46.2/100
O3 (ozone):
Fair
38.6/100
SO2 (sulfur dioxide):
Good
1.6/100
CO (carbon monoxide):
Good
0.6/100
HCHO (formaldehyde):
Good
3.9/100
PM1 (ultrafine particles):
Good
3.8/100
Pollen forecast in Glenwood Springs
View pollen forecastAir quality forecasts for neighbourhoods and landmarks in Glenwood Springs
Frequently Asked Questions
Is air quality bad in Glenwood Springs right now?
On 20 September 2026, overall air quality in Glenwood Springs is moderate. AQI is the main air quality indicator at 41.2/100. Pollution peaks around 2:00 PM (NO2: 41.2/100).
Will air quality be worse tomorrow in Glenwood Springs?
On 21 September 2026, air quality conditions in Glenwood Springs will be similar to today, with AQI forecast at moderate at 46.2/100. Pollution peaks around 7:00 PM (NO2: 46.2/100).
When is air pollution at its worst in Glenwood Springs?
Air quality in Glenwood Springs shifts across the year, as spring and autumn generally bring the cleanest, most stable air; by contrast, valley and basin locations can see pollution trapped under cold air for days during winter inversions. Wind exposure varies a lot by terrain here, so nearby locations can see quite different smoke and inversion impacts.
Are air quality levels in Glenwood Springs 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: 20 September 2026 at 14:33 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.
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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