Pillsbury State Forest- Walter Stark Horse Camp pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Pillsbury State Forest- Walter Stark Horse Camp is low; ragweed is low.
Pollen Tomorrow
Tomorrow (21 September 2026) ragweed no longer expected.
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) | Low | 15/100 |
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) | None | 0/100 |
Local Environmental Conditions
At Pillsbury State Forest- Walter Stark Horse Camp, hazel and willow crowd the water's edge, both classic sources of early allergenic pollen, close to home here. The broader area tends to mirror this pattern, with only minor local variation. Seasonal timing here generally tracks the wider region, give or take a week or so.
For Pillsbury State Forest- Walter Stark Horse Camp, hazel and willow near the water open the pollen calendar early, building through the tail end of winter into March. Grass pollen climbs toward a June peak, with ragweed climbing to its own high point from mid-August through October. Local weather swings can shift these windows slightly, but the overall order tends to hold.
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Frequently Asked Questions About Pollen in Minnesota
Is pollen high in Pillsbury State Forest- Walter Stark Horse Camp right now?
On 20 September 2026, overall pollen levels in Pillsbury State Forest- Walter Stark Horse Camp are low. Ambrosia is the main contributor to airborne pollen
Will pollen levels change in Pillsbury State Forest- Walter Stark Horse Camp tomorrow?
On 21 September 2026, pollen conditions in Pillsbury State Forest- Walter Stark Horse Camp will be similar to today with no significant pollen expected.
Is pollen expected to decrease in Pillsbury State Forest- Walter Stark Horse Camp 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 Pillsbury State Forest- Walter Stark Horse Camp?
On 20 September 2026, Ambrosia is the dominant pollen source in Pillsbury State Forest- Walter Stark Horse Camp. artemisia and grass are not currently active.
When is pollen season in Pillsbury State Forest- Walter Stark Horse Camp?
How often is the Pillsbury State Forest- Walter Stark Horse Camp pollen forecast updated?
The Pillsbury State Forest- Walter Stark Horse Camp pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Pillsbury State Forest- Walter Stark Horse Camp 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 Pillsbury State Forest- Walter Stark Horse Camp 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 Pillsbury State Forest- Walter Stark Horse Camp, 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).
