Mount Crested Butte Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (6 October) pollen in Mount Crested Butte is low; mold (alternaria) and mold (cladosporium) are low.
Pollen Tomorrow
Tomorrow (7 October 2026) mold (alternaria) remains low, mold (cladosporium) remains low, ragweed at low levels.
7-Day Trend
Over the next week ragweed, mold (alternaria), and mold (cladosporium) will decrease; grass and mugwort will remain stable.
Explore Forecasts
Air Quality & Mold
Pollen in Other Cities
Air Quality in Other Cities
Get More in Our App
Local pollen and air quality forecasts, interactive pollen maps and route profiles
Features and forecast availability vary by region.
Pollen Risk
Today - 6 October
| 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) | None | 0/100 |
| Alternaria | Low | 3/100 |
| Cladosporium | Low | 11/100 |
Tomorrow - 7 October
| 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) | None | 0/100 | |
| Ragweed (Ambrosia) | Low | 1/100 | |
| Alternaria | Low | 6/100 | |
| Cladosporium | Low | 22/100 |
Local Environmental Conditions
This part of Mount Crested Butte is surrounded mainly by open grassland, with some woodland. The damp ground beside running water nearby supports trees such as willow and poplar, adding to local pollen. Allergenic trees nearby include poplar and willow. Beyond the trees, grasses matter a great deal, and mugwort and pigweed are the main weed sources.
Tree pollen peaks in late spring, when the weather warms to around 5°C and poplar and willow are in full flower. Grass pollen follows, peaking in midsummer and easing off by late summer. Mugwort and pigweed bring a final peak from midsummer into early fall. By mid-fall, as temperatures fall to around freezing, pollen levels are low again.
Get pollen & AQ on Strava
Follow your environmental exposure and performance with the free Airmine-Strava integration. See your pollen and air quality exposure for every Strava activity.
Frequently Asked Questions About Pollen in Colorado
Is pollen high in Mount Crested Butte right now?
Currently, there is no significant pollen in Mount Crested Butte.
Will pollen levels change in Mount Crested Butte tomorrow?
On 7 October 2026, pollen conditions in Mount Crested Butte will be different from today, with ambrosia at low levels
Is pollen expected to decrease in Mount Crested Butte this week?
According to the five-day outlook, ambrosia pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.
Which pollen types are currently active in Mount Crested Butte?
On 6 October 2026, there are no significant pollen types in Mount Crested Butte.
When is pollen season in Mount Crested Butte?
How often is the Mount Crested Butte pollen forecast updated?
The Mount Crested Butte pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Mount 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 Mount 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 Mount 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 pollen scores represent risk levels, not direct pollen measurements. Higher scores indicate higher risk.
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).
