Thonon-les-Bains pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Thonon-les-Bains is none
Pollen Tomorrow
Tomorrow (21 September 2026) levels are similar to today.
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) | 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
In Thonon-les-Bains, tree pollen mainly comes from birch and oak found in parks and along the Allier. alpine valley pasture and orchards nearby contribute meaningful grass and crop pollen exposure, while local conditions tied to the alpine-continental climate affect how far pollen spreads.
Thonon-les-Bains begins its pollen season in deep winter, as hazel and alder start to release, before birch and oak pollen takes over through April and May, before grass from alpine valley farmland rounds out the season into summer, consistent with the wider alpine-continental character of the region.
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Frequently Asked Questions About Pollen in Auvergne-Rhône-Alpes
Is pollen high in Thonon-les-Bains right now?
Currently, there is no significant pollen in Thonon-les-Bains.
Will pollen levels change in Thonon-les-Bains tomorrow?
On 21 September 2026, pollen conditions in Thonon-les-Bains will be similar to today with no significant pollen expected.
Is pollen expected to decrease in Thonon-les-Bains this week?
According to the five-day outlook, pollen levels are expected to remain relatively stable.
Which pollen types are currently active in Thonon-les-Bains?
On 20 September 2026, there are no significant pollen types in Thonon-les-Bains.
When is pollen season in Thonon-les-Bains?
How often is the Thonon-les-Bains pollen forecast updated?
The Thonon-les-Bains pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Thonon-les-Bains 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 Thonon-les-Bains 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 Thonon-les-Bains, 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).
