Mulhouse pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Mulhouse is low; grass is low.
Pollen Tomorrow
Tomorrow (21 September 2026) grass no longer expected.
7-Day Trend
Over the next week cypress, grass, 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 | 12/100 |
| 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
Mulhouse' Parc Salvator and the Doller and Ill river corridors feature oak, birch, and plane as the main tree pollen sources, with exposure varying between these green areas and the more built-up industrial city centre. Surrounding Alsatian vineyard farmland and the Vosges foothills contribute substantial tree and grass pollen, while the warm Alsace Rhine plain microclimate extends the pollen season compared to surrounding upland areas.
Mulhouse benefits from the warm, dry Alsace Rhine plain microclimate, extending the season compared to surrounding Vosges upland areas. Hazel and alder open from January before birch peaks through April, with oak and plane following through May. Grass from surrounding Alsatian vineyard farmland peaks through June and July, while the Doller and Ill valleys channel airflows across the industrial city.
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Frequently Asked Questions About Pollen in Grand Est
Is pollen high in Mulhouse right now?
On 20 September 2026, overall pollen levels in Mulhouse are low. Grass is the main contributor to airborne pollen
Will pollen levels change in Mulhouse tomorrow?
On 21 September 2026, pollen conditions in Mulhouse will be similar to today with no significant pollen expected.
Is pollen expected to decrease in Mulhouse this week?
According to the five-day outlook, pollen levels are expected to remain relatively stable.
Which pollen types are currently active in Mulhouse?
On 20 September 2026, Grass is the dominant pollen source in Mulhouse. artemisia, cypress, and willow are not currently active.
When is pollen season in Mulhouse?
How often is the Mulhouse pollen forecast updated?
The Mulhouse pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Mulhouse 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 Mulhouse 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 Mulhouse, 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).
