Spiez pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Spiez 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 | 13/100 |
| 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
Spiez's Lake Thun peninsula setting features oak, linden, and vineyard vegetation as pollen sources, with exposure varying between lakeside vineyard slopes and the built-up resort centre. Lake breezes moderate local pollen timing.
Spiez sees its pollen season start in January with hazel and alder, birch peaking strongly through April, oak and ash close behind, and grass finally taking over across June and July. The Aare valley and surrounding foothills channel airflows and can concentrate pollen under calm conditions, while nearby Swiss farmland adds substantial tree and grass exposure. Being somewhat higher than the lake cities, the season here tends to start a touch later.
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Frequently Asked Questions About Pollen in Bern
Is pollen high in Spiez right now?
On 20 September 2026, overall pollen levels in Spiez are low. Grass is the main contributor to airborne pollen
Will pollen levels change in Spiez tomorrow?
On 21 September 2026, pollen conditions in Spiez will be similar to today with no significant pollen expected.
Is pollen expected to decrease in Spiez this week?
According to the five-day outlook, grass pollen levels will increase later in the week.
Which pollen types are currently active in Spiez?
On 20 September 2026, Grass is the dominant pollen source in Spiez. artemisia, cypress, and willow are not currently active.
When is pollen season in Spiez?
How often is the Spiez pollen forecast updated?
The Spiez pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Spiez 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 Spiez 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 Spiez, 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).
