Cole, Denver Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (10 October) pollen in Cole, Denver is low; ragweed, mold (alternaria), and mold (cladosporium) are low.
Pollen Tomorrow
Tomorrow (11 October 2026) levels are similar to today.
7-Day Trend
Over the next week mugwort and ragweed will increase; mold (alternaria) and mold (cladosporium) will decrease; grass will remain stable.
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Pollen Risk
Today - 10 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) | Low | 12/100 |
| Mold (Alternaria) | Low | 21/100 |
| Mold (Cladosporium) | Low | 25/100 |
Tomorrow - 11 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 | 12/100 | |
| Mold (Alternaria) | Low | 19/100 | |
| Mold (Cladosporium) | Low | 24/100 |
Local Environmental Conditions
This site in Denver is surrounded mainly by built-up land, which covers around 83% of the nearby area. Lawns and planted trees in a nearby park add to local grass and tree pollen. Allergenic trees nearby include oak, maple and juniper. Grass pollen is significant here, and pigweed and mugwort contribute weed pollen.
Tree pollen peaks in late spring, when the weather warms to around 15°C and oak, maple and juniper are in full flower. Grass pollen follows, peaking in early summer and easing off by early fall. Later, pigweed and mugwort keep weed pollen in the air from early summer into early fall. Rain is heaviest in spring, often giving short breaks from high pollen levels.
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Resource Hub
Pollen forecast neighborhoods 81 neighborhoods
Sports venues in Denver 6 sports venues
Frequently Asked Questions About Pollen in Colorado
Is pollen high in Denver right now?
On 10 October 2026, overall pollen levels in Denver are low. Ambrosia is the main contributor to airborne pollen
Will pollen levels change in Denver tomorrow?
On 11 October 2026, pollen conditions in Denver will be similar to today, with ambrosia at low levels
Is pollen expected to decrease in Denver this week?
According to the five-day outlook, ambrosia and artemisia pollen levels will increase later in the week.
Which pollen types are currently active in Denver?
On 10 October 2026, Ambrosia is the dominant pollen source in Denver. artemisia and grass are not currently active.
When is pollen season in Denver?
How often is the Denver pollen forecast updated?
The Denver pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Denver 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 Denver 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 Denver, 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).
