Mendota Heights Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (11 October) pollen in Mendota Heights is moderate; ragweed is moderate; mugwort, mold (alternaria), and mold (cladosporium) are low.
Pollen Tomorrow
Tomorrow (12 October 2026) mugwort remains low, mold (alternaria) remains low, ragweed declining, mold (cladosporium) increasing.
7-Day Trend
Over the next week mugwort, ragweed, mold (alternaria), and mold (cladosporium) will decrease; grass will remain stable.
Explore Forecasts
Air Quality & Mold
Pollen in Other Cities
Air Quality in Other Cities
Get More in Our App
Local pollen and air quality forecasts, interactive pollen maps and route profiles
Features and forecast availability vary by region.
Pollen Risk
Today - 11 October
| 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) | Low | 25/100 |
| Ragweed (Ambrosia) | Moderate | 39/100 |
| Mold (Alternaria) | Low | 13/100 |
| Mold (Cladosporium) | Low | 22/100 |
Tomorrow - 12 October
| 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) | Low | 7/100 | |
| Ragweed (Ambrosia) | Low | 19/100 | |
| Mold (Alternaria) | Low | 18/100 | |
| Mold (Cladosporium) | Moderate | 26/100 |
Local Environmental Conditions
Woodland and open grassland share the area around the center of Mendota Heights, plus some built-up land. Close to a stream or river, riverside trees such as willow and poplar contribute to what is in the air. The leading allergenic tree nearby is maple, with oak and poplar close behind. Grasses also feature strongly, alongside ragweed and mugwort among the weeds.
Maple, oak and poplar lead the season in mid-spring, as temperatures climb to around 5°C, and tree pollen reaches its peak. Grasses take over in early summer, with temperatures around 20°C, and their pollen lingers into early fall. The season closes with ragweed and mugwort from late summer into mid-fall. Rain is heaviest in summer, often giving short breaks from high pollen levels.
Get pollen & AQ on Strava
Follow your environmental exposure and performance with the free Airmine-Strava integration. See your pollen and air quality exposure for every Strava activity.
Resource Hub
Frequently Asked Questions About Pollen in Minnesota
Is pollen high in Mendota Heights right now?
On 11 October 2026, overall pollen levels in Mendota Heights are moderate. Ambrosia is the main contributor to airborne pollen, while artemisia remain at lower levels
Will pollen levels change in Mendota Heights tomorrow?
On 12 October 2026, pollen conditions in Mendota Heights will be different from today, with artemisia at low levels and ambrosia continuing to decline
Is pollen expected to decrease in Mendota Heights this week?
According to the five-day outlook, ambrosia and artemisia pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.
Which pollen types are currently active in Mendota Heights?
On 11 October 2026, Ambrosia is the dominant pollen source in Mendota Heights. artemisia are also present but at lower levels. grass are not currently active.
When is pollen season in Mendota Heights?
How often is the Mendota Heights pollen forecast updated?
The Mendota Heights pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Mendota Heights 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 Mendota Heights 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 Mendota Heights, 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 pollen scores represent risk levels, not direct pollen measurements. Higher scores indicate higher risk.
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).
