Old Crossing Treaty Park pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Old Crossing Treaty Park is low; ragweed is low.
Pollen Tomorrow
Tomorrow (21 September 2026) levels are similar to today.
7-Day Trend
Over the next week grass and ragweed will increase; 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) | Low | 11/100 |
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 Old Crossing Treaty Park, hazel and willow cluster near the water, an early and reliable source of allergenic pollen; this sits close to home here. Woodland where oak stands alongside birch, the latter especially aggressive as an allergen; this sits within the neighborhood. Located a short distance from here, this area has this park's mix of turf and landscaped trees contributes a modest grass and ragweed pollen load.
Around Old Crossing Treaty Park, the water-adjacent hazel and willow are early risers, starting well before the main spring rush, topping out around March. Further into spring, the area's oak and birch stands drive the pollen count, generally peaking somewhere between April and May. By late spring, grass pollen is climbing steadily toward a June high point, 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 Old Crossing Treaty Park right now?
On 20 September 2026, overall pollen levels in Old Crossing Treaty Park are low. Ambrosia is the main contributor to airborne pollen
Will pollen levels change in Old Crossing Treaty Park tomorrow?
On 21 September 2026, pollen conditions in Old Crossing Treaty Park will be similar to today, with ambrosia at low levels
Is pollen expected to decrease in Old Crossing Treaty Park this week?
According to the five-day outlook, ambrosia and grass pollen levels will increase later in the week.
Which pollen types are currently active in Old Crossing Treaty Park?
On 20 September 2026, Ambrosia is the dominant pollen source in Old Crossing Treaty Park. artemisia and grass are not currently active.
When is pollen season in Old Crossing Treaty Park?
How often is the Old Crossing Treaty Park pollen forecast updated?
The Old Crossing Treaty Park pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Old Crossing Treaty 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 Old Crossing Treaty 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 Old Crossing Treaty 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).
