Ottertail pollen forecast — Thumper Pond neighborhood
Pollen Today
Today (20 September) pollen in Thumper Pond, Ottertail is moderate; ragweed is moderate.
Pollen Tomorrow
Tomorrow (21 September 2026) ragweed declining.
7-Day Trend
Over the next week grass, mugwort, and ragweed will increase.
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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) | Moderate | 36/100 |
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) | None | 0/100 | |
| Ragweed (Ambrosia) | Low | 22/100 |
Local Environmental Conditions
Around Thumper Pond, a stretch of hazel and willow lines the water, feeding some of spring's earliest pollen; this sits in the surrounding area. A wooded area built around oak and birch, both contributing heavily to the region's spring pollen totals, within the local area. Ground-level conditions like local landscaping can nudge these figures slightly either way.
At Thumper Pond, the waterside hazel and willow are consistently first to release pollen each year, leading off the pollen calendar, with a peak generally falling in late winter. Late spring brings rising grass pollen that crests in June, and ragweed later takes the lead from mid-August through October. Regional pollen monitoring generally reflects this same pattern across nearby areas.
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Frequently Asked Questions About Pollen in Minnesota
Is pollen high in Ottertail right now?
On 20 September 2026, overall pollen levels in Ottertail are moderate. Ambrosia is the main contributor to airborne pollen
Will pollen levels change in Ottertail tomorrow?
On 21 September 2026, pollen conditions in Ottertail will be different from today, with ambrosia continuing to decline
Is pollen expected to decrease in Ottertail this week?
According to the five-day outlook, ambrosia, artemisia, and grass pollen levels will increase later in the week.
Which pollen types are currently active in Ottertail?
On 20 September 2026, Ambrosia is the dominant pollen source in Ottertail. artemisia and grass are not currently active.
When is pollen season in Ottertail?
How often is the Ottertail pollen forecast updated?
The Ottertail pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Ottertail 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 Ottertail 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 Ottertail, 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).
