Leonberg pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Leonberg is low; mugwort is low.
Pollen Tomorrow
Tomorrow (21 September 2026) mugwort no longer expected.
7-Day Trend
Over the next week cypress, grass, willow, and 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) | Low | 13/100 |
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
In Leonberg, maple, ash, and chestnut anchor the parks and street trees as primary pollen sources, with levels differing between green space and the built-up core. Additional tree and grass pollen comes from Swabian farmland and valley-floor orchards surrounding the town, while valley air can concentrate pollen under calm conditions.
Leonberg's pollen season stretches across January into August, kicking off with alder and hazel from January ahead of birch and oak peaking through May. Grass pollen peaks next, running through June and July. The town sits amid Swabian farmland near the Neckar, where orchards and vineyards border open arable land, keeping grass and orchard pollen elevated through early summer.
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Frequently Asked Questions About Pollen in Baden-Württemberg
Is pollen high in Leonberg right now?
On 20 September 2026, overall pollen levels in Leonberg are low. Artemisia is the main contributor to airborne pollen
Will pollen levels change in Leonberg tomorrow?
On 21 September 2026, pollen conditions in Leonberg will be similar to today with no significant pollen expected.
Is pollen expected to decrease in Leonberg this week?
According to the five-day outlook, pollen levels are expected to remain relatively stable.
Which pollen types are currently active in Leonberg?
On 20 September 2026, Artemisia is the dominant pollen source in Leonberg. cypress, grass, and willow are not currently active.
When is pollen season in Leonberg?
How often is the Leonberg pollen forecast updated?
The Leonberg pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Leonberg 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 Leonberg 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 Leonberg, 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).
