Rosenheim pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Rosenheim is low; grass is low.
Pollen Tomorrow
Tomorrow (21 September 2026) grass no longer expected.
7-Day Trend
Over the next week grass will increase; cypress, willow, and mugwort will remain stable.
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Features and forecast availability vary by region.
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) | Low | 9/100 |
| Willow (Salicaceae) | None | 0/100 |
| Mugwort (Artemisia) | None | 0/100 |
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 |
Local Environmental Conditions
Parks and gardens across Rosenheim lean on beech, spruce, and linden as the dominant tree pollen source, with the built-up core seeing somewhat less exposure. Beyond the town, Bavarian Alpine foreland farmland and mountain pasture edges add further tree and grass pollen, while lake-cooled air can shift local pollen timing somewhat.
Rosenheim's pollen season spans January into August, launched by alder and hazel from late January before birch pollen dominating April into May. Grass pollen then climbs through June and July. Nearby, Alpine foothill terrain mixes pastureland with dense spruce and pine forest, contributing mountain grass and conifer pollen into midsummer.
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Frequently Asked Questions About Pollen in Bavaria
Is pollen high in Rosenheim right now?
On 20 September 2026, overall pollen levels in Rosenheim are low. Grass is the main contributor to airborne pollen
Will pollen levels change in Rosenheim tomorrow?
On 21 September 2026, pollen conditions in Rosenheim will be similar to today with no significant pollen expected.
Is pollen expected to decrease in Rosenheim this week?
According to the five-day outlook, grass pollen levels will increase later in the week.
Which pollen types are currently active in Rosenheim?
On 20 September 2026, Grass is the dominant pollen source in Rosenheim. willow, artemisia, and cypress are not currently active.
When is pollen season in Rosenheim?
How often is the Rosenheim pollen forecast updated?
The Rosenheim pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Rosenheim 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 Rosenheim 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 Rosenheim, 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).
