Thistledew Campground and Day-Use Area pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Thistledew Campground and Day-Use Area is low; ragweed is low.
Pollen Tomorrow
Tomorrow (21 September 2026) levels are similar to today.
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 | 3/100 |
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 | 5/100 |
Local Environmental Conditions
At Thistledew Campground and Day-Use Area, along the damp banks, hazel and willow release some of the year's first tree pollen; this sits just outside the immediate area. Located not far from here, this area has oak and birch make up the bulk of this woodland, birch being the more potent allergen of the two.
In Thistledew Campground and Day-Use Area, along the waterway, hazel and willow release pollen first, climbing steadily from late winter into March. As spring advances, oak and birch in the nearby woodland become the dominant source, building to its sharpest point across April and May. Moving into early summer, grass pollen climbs to its seasonal high in June, before ragweed takes over as the dominant allergen from mid-August through October.
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Frequently Asked Questions About Pollen in Minnesota
Is pollen high in Thistledew Campground and Day-Use Area right now?
On 20 September 2026, overall pollen levels in Thistledew Campground and Day-Use Area are low. Ambrosia is the main contributor to airborne pollen
Will pollen levels change in Thistledew Campground and Day-Use Area tomorrow?
On 21 September 2026, pollen conditions in Thistledew Campground and Day-Use Area will be similar to today, with ambrosia at low levels
Is pollen expected to decrease in Thistledew Campground and Day-Use Area this week?
According to the five-day outlook, artemisia, grass, and ambrosia pollen levels will increase later in the week.
Which pollen types are currently active in Thistledew Campground and Day-Use Area?
On 20 September 2026, Ambrosia is the dominant pollen source in Thistledew Campground and Day-Use Area. artemisia and grass are not currently active.
When is pollen season in Thistledew Campground and Day-Use Area?
How often is the Thistledew Campground and Day-Use Area pollen forecast updated?
The Thistledew Campground and Day-Use Area pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Thistledew Campground and Day-Use Area 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 Thistledew Campground and Day-Use Area 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 Thistledew Campground and Day-Use Area, 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).
