Estes Park pollen forecast — North Saint Vrain Avenue neighborhood
Pollen Today
Today (20 September) pollen in North Saint Vrain Avenue, Estes Park 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 will increase; 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 | 22/100 |
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 | 3/100 | |
| Ragweed (Ambrosia) | Moderate | 32/100 |
Local Environmental Conditions
Nearby, within the neighborhood, a stretch of willow and aspen lines the water, feeding some of the season's mountain tree pollen. Here, not far from here, this patch of forest is largely lodgepole pine and subalpine fir, characteristic of the surrounding mountains. Nearby, not far from here, the park's turf and planted trees form a small but steady source of grass and ragweed pollen.
January is the coldest month here at around -9°C, warming to about 18°C by July, and the 528 mm annual rainfall is spread fairly evenly across the year. Expect pollen activity to start building from around February, tracking the rise in temperature out of the January low.
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Pollen forecast neighborhoods 26 neighborhoods
Frequently Asked Questions About Pollen in Colorado
Is pollen high in Estes Park right now?
On 20 September 2026, overall pollen levels in Estes Park are low. Ambrosia is the main contributor to airborne pollen
Will pollen levels change in Estes Park tomorrow?
On 21 September 2026, pollen conditions in Estes Park will be different from today, with artemisia at low levels and ambrosia increasing
Is pollen expected to decrease in Estes Park this week?
According to the five-day outlook, ambrosia pollen levels are expected to gradually decrease, while artemisia pollen will increase, suggesting mixed conditions later in the week.
Which pollen types are currently active in Estes Park?
On 20 September 2026, Ambrosia is the dominant pollen source in Estes Park. artemisia and grass are not currently active.
When is pollen season in Estes Park?
How often is the Estes Park pollen forecast updated?
The Estes Park pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Estes Park 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 Estes Park 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 Estes Park, 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).
