Worst air pollution Crested Butte, today and tomorrow
Today (16 July): Air quality in Crested Butte is fair. PM2.5, PM10, and PM1 are fair; AQI, NO2, and O3 are medium; SO2, CO, and HCHO are good. Pollution peaks around 7:00 AM (O3: 48.6/100).
Tomorrow (17 July 2026): Air quality in Crested Butte is fair. PM10 decreases to good; PM1 decreases to good; all other pollutants stay as today. Pollution peaks around 6:00 AM (O3: 51.8/100). 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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Crested Butte experiences air quality conditions shaped chiefly by high-altitude mountain air, and among the cleanest air in Colorado, aside from occasional wildfire smoke. Most days bring generally favorable conditions here, with occasional exceptions tied to shifting weather patterns. Checking current readings is still the best way to plan outdoor activity around Crested Butte.
Today - 16 July | Pollution peaks at 07:00
AQI:
Medium
48.6/100
PM2.5 (fine particles):
Fair
28.0/100
PM10 (coarse particles):
Fair
24.5/100
NO2 (nitrogen dioxide):
Medium
47.9/100
O3 (ozone):
Medium
48.6/100
SO2 (sulfur dioxide):
Good
14.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
8.4/100
PM1 (ultrafine particles):
Fair
20.2/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 06:00
AQI:
Medium
51.8/100
PM2.5 (fine particles):
Fair
28.0/100
PM10 (coarse particles):
Good
17.8/100
NO2 (nitrogen dioxide):
Medium
44.5/100
O3 (ozone):
Medium
51.8/100
SO2 (sulfur dioxide):
Good
11.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
9.8/100
PM1 (ultrafine particles):
Good
19.1/100
Pollen forecast in Crested Butte
View pollen forecastFrequently Asked Questions
Is air quality bad in Crested Butte right now?
On 16 July 2026, overall air quality in Crested Butte is fair. PM2.5 is the main pollutant at 28.0/100. Pollution peaks around 7:00 AM (O3: 48.6/100).
Will air quality be worse tomorrow in Crested Butte?
On 17 July 2026, air quality conditions in Crested Butte will be similar to today, with PM2.5 forecast at fair at 28.0/100. Pollution peaks around 6:00 AM (O3: 51.8/100).
When is air pollution at its worst in Crested Butte?
Crested Butte's air quality follows a clear seasonal pattern: spring and autumn generally bring the cleanest, most stable air, but valley and basin locations can see pollution trapped under cold air for days during winter inversions. Valley and basin locations are especially prone to these winter inversion episodes compared to more exposed, higher terrain.
Are air quality levels in Crested Butte 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