Thief River Falls pollen forecast — Thief River Falls Scenic Tourist Park neighborhood
Pollen Today
Today (20 September) pollen in Thief River Falls Scenic Tourist Park, Thief River Falls is moderate; ragweed is moderate.
Pollen Tomorrow
Tomorrow (21 September 2026) levels are similar to today.
7-Day Trend
Over the next week grass will increase; ragweed will decrease; mugwort 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) | Moderate | 32/100 |
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) | Moderate | 43/100 |
Local Environmental Conditions
For Thief River Falls Scenic Tourist Park, hazel and willow cluster near the water, an early and reliable source of allergenic pollen; this sits nearby. Nearby, within the neighborhood's edge, a park combining lawn grass and planted trees, both minor but real contributors to pollen here. Surrounding neighborhoods with similar tree cover typically see a closely comparable pollen mix.
Around Thief River Falls Scenic Tourist Park, near the bank, hazel and willow lead the seasonal calendar, climbing steadily from late winter into March. By late spring, grass pollen is climbing steadily toward a June high point, before ragweed's late-summer surge carries the season into October. Exact peak dates shift by a few weeks year to year depending on temperature and rainfall.
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Pollen forecast neighborhoods 1 neighborhood
Frequently Asked Questions About Pollen in Minnesota
Is pollen high in Thief River Falls right now?
On 20 September 2026, overall pollen levels in Thief River Falls are moderate. Ambrosia is the main contributor to airborne pollen
Will pollen levels change in Thief River Falls tomorrow?
On 21 September 2026, pollen conditions in Thief River Falls will be similar to today, with ambrosia at moderate levels
Is pollen expected to decrease in Thief River Falls this week?
According to the five-day outlook, ambrosia pollen levels are expected to gradually decrease, while grass pollen will increase, suggesting mixed conditions later in the week.
Which pollen types are currently active in Thief River Falls?
On 20 September 2026, Ambrosia is the dominant pollen source in Thief River Falls. artemisia and grass are not currently active.
When is pollen season in Thief River Falls?
How often is the Thief River Falls pollen forecast updated?
The Thief River Falls pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Thief River Falls 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 Thief River Falls 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 Thief River Falls, 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).
