Crested Butte pollen forecast — Trailhead Children's Museum neighborhood
Pollen Today
Today (20 September) pollen in Trailhead Children's Museum, Crested Butte is low; ragweed is low.
Pollen Tomorrow
Tomorrow (21 September 2026) ragweed increasing, mugwort at low levels.
7-Day Trend
Over the next week mugwort and ragweed will decrease; grass will remain stable.
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Pollen Risk
Today - 20 September
| Pollen species | Level | Value |
|---|---|---|
| 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) | None | 0/100 |
| Ragweed (Ambrosia) | Low | 20/100 |
Tomorrow - 21 September
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| 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 | 5/100 | |
| Ragweed (Ambrosia) | Moderate | 34/100 |
Local Environmental Conditions
This area, close to this spot, has willow and aspen crowd the water's edge, typical of the Rockies' montane riparian corridors. A stand of subalpine fir and lodgepole pine, typical of this Rocky Mountain elevation, a short distance from here. Here, in the wider area, mown grass and ornamental trees in a nearby park, adding to seasonal grass and ragweed pollen.
Temperatures here typically swing from about -13°C in January up to 14°C in July; the 531 mm annual rainfall is spread fairly evenly across the year. Pollen activity typically picks up as temperatures climb out of the January low, from around February onward.
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Frequently Asked Questions About Pollen in Colorado
Is pollen high in Crested Butte right now?
On 20 September 2026, overall pollen levels in Crested Butte are low. Ambrosia is the main contributor to airborne pollen
Will pollen levels change in Crested Butte tomorrow?
On 21 September 2026, pollen conditions in Crested Butte will be different from today, with artemisia at low levels and ambrosia increasing
Is pollen expected to decrease in Crested Butte this week?
According to the five-day outlook, artemisia and ambrosia pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.
Which pollen types are currently active in Crested Butte?
On 20 September 2026, Ambrosia is the dominant pollen source in Crested Butte. artemisia and grass are not currently active.
When is pollen season in Crested Butte?
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.
Understanding the Scale
The 0–100 scores represent risk levels, not direct measurements of pollen or air pollutant concentrations. Higher scores indicate higher risk. Pollen and air quality use different thresholds.
Pollen
| None | 0 | No or negligible risk of exposure. Pollen/mold exposure is expected to be minimal. |
| Low | 0-25 | Low risk of exposure. Small amounts of pollen or mold spores may be present. |
| Moderate | 25-50 | Moderate risk of exposure. Pollen/mold exposure is expected to be noticeable. |
| High | 50-75 | High risk of exposure. Elevated pollen/mold exposure is expected. |
| Very High | 75-100 | Very high risk of exposure. Pollen/mold exposure is expected to be at or near its highest levels. |
Get More in the Airmine Pollen app
Get 15-day pollen forecasts with morning, afternoon and evening detail, plus 5-day air quality forecasts. Explore interactive pollen risk maps, estimated pollen season start, route profiles and a symptoms diary.
Features and forecast availability vary by region. Currently covering Europe, the contiguous US, southern Canada, South Africa, Australia, Indonesia (Java & Bali), Brazil, Paraguay, Uruguay and the Buenos Aires area.
Developed with support from the European Space Agency (ESA) Business Applications and Space Solutions (BASS).
