Crested Butte pollen forecast - today, tomorrow and the week ahead

Today (9 August) pollen in Crested Butte is medium; ragweed is medium; grass and mugwort are low. Tomorrow (10 August 2026) levels are similar - mugwort remains low, ragweed remains medium. Over the following five days grass, mugwort, and ragweed will increase. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.

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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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Set on a high alpine valley at 8,900 feet in the Elk Mountains, Crested Butte's landscape is defined by aspen groves alongside subalpine fir and wildflower meadows, the main contributors to seasonal pollen exposure. Local parks and open ground tend to see higher pollen counts than the denser urban core. The mix of native and introduced species here is fairly typical for this part of the country.

Today - 9 August

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    Low

    3/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Low

    14/100

  • Ragweed (Ambrosia):

    Medium

    43/100

High pollen levels may trigger sneezing, itchy eyes, and congestion. Airmine's neighbourhood estimates use satellites to map local vegetation and a statistical prediction model, updated four times daily.

Tomorrow - 10 August

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    None

    0/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Low

    10/100

  • Ragweed (Ambrosia):

    Medium

    39/100

Air quality in Crested Butte

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Frequently Asked Questions

Is pollen high in Crested Butte right now?

On 9 August 2026, overall pollen levels in Crested Butte are moderate. Ambrosia is the main contributor to airborne pollen, while grass and artemisia remain at lower levels

Will pollen levels change in Crested Butte tomorrow?

On 10 August 2026, pollen conditions in Crested Butte will be different from today, with ambrosia at medium levels, artemisia at low levels

Is pollen expected to decrease in Crested Butte this week?

According to the five-day outlook, grass, ambrosia, and artemisia pollen levels will increase later in the week.

Which pollen types are currently active in Crested Butte?

On 9 August 2026, Ambrosia is the dominant pollen source in Crested Butte. grass and artemisia are also present but at lower levels. cypress are not currently active.

When is pollen season in Crested Butte?
In Crested Butte, pollen season begins with juniper and cottonwood starting in March then ash builds through April. Grass pollen then peaks through May and June, and sagebrush and ragweed extend the season into September. The dry mountain climate offers fewer rain breaks than more humid parts of the country, a defining feature of the local season.
How often is the Crested Butte pollen forecast updated?

The Crested Butte pollen forecast is updated four times daily. See the timestamp below for the most recent update.

Does pollen in Crested Butte come from nearby or far away?

Studies show that most pollen exposure (often 70–90%) comes from nearby sources, such as local trees and vegetation. A good pollen forecast therefore depends on accurately representing local vegetation. Pollen can travel long distances, but this usually matters only early in the season or during specific wind events.

Are pollen levels in Crested Butte based on measurements or forecasts?

Pollen data is often misunderstood. Most "pollen levels" are not real-time measurements, but forecasts.

Direct pollen measurements are typically delayed by 1-2 days because they require manual analysis. To show current conditions in Crested Butte, modern forecasts combine recent measurements, weather data, and information about local vegetation.

This allows us to estimate pollen levels for today and the coming days, not just report the past.

Airmine’s atmospheric monitoring platform was developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team, using satellite and Earth observation technologies to improve emissions monitoring.

Want to see pollen forecasts for other cities in United States?

Check pollen in other popular cities:

Data provided by Airmine — Last update: 10 August 2026 at 02:34 CEST (Data is updated four times daily.)

This page provides the latest public pollen forecast for Crested Butte.

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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.