Letzigrund, Zürich Pollen Forecast - Today, Tomorrow and the Week Ahead
Pollen Today
Today (11 October) pollen in Letzigrund, Zürich is low; mold (alternaria) and mold (cladosporium) are low.
Pollen Tomorrow
Tomorrow (12 October 2026) levels are similar to today.
7-Day Trend
Over the next week mold (alternaria) will increase; mold (cladosporium) will decrease; grass, willow, and mugwort will remain stable.
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Pollen Risk
Today - 11 October
| 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 |
| Mold (Alternaria) | Low | 2/100 |
| Mold (Cladosporium) | Low | 6/100 |
Tomorrow - 12 October
| 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 | |
| Mold (Alternaria) | Low | 2/100 | |
| Mold (Cladosporium) | Low | 5/100 |
Local Environmental Conditions
This part of Zürich is densely built up, with some woodland. A nearby park adds mown lawns and planted trees to the local pollen mix. Common allergenic trees nearby include oak, maple and hazel. Grasses and weeds such as plantain and ragweed round out the local mix. Compared with most places, ragweed is especially widespread here, which makes it one of the key local allergens.
First to flower is hazel, in late winter. Tree pollen peaks in late spring, when the weather warms to around 15°C and oak and maple are in full flower. Grasses take over in early summer, with temperatures around 20°C, and their pollen lingers into late summer. The most intense period comes from late spring into late summer, when plantain and ragweed are in flower.
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Resource Hub
Pollen forecast neighborhoods 14 neighborhoods
Sports venues in Zürich 1 sports venue
Frequently Asked Questions About Pollen in Zürich
Is pollen high in Zürich right now?
Currently, there is no significant pollen in Zürich.
Will pollen levels change in Zürich tomorrow?
On 12 October 2026, pollen conditions in Zürich will be similar to today with no significant pollen expected.
Is pollen expected to decrease in Zürich this week?
According to the five-day outlook, pollen levels are expected to remain relatively stable.
Which pollen types are currently active in Zürich?
On 11 October 2026, there are no significant pollen types in Zürich.
When is pollen season in Zürich?
How often is the Zürich pollen forecast updated?
The Zürich pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Zürich 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 Zürich 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 Zürich, 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 pollen scores represent risk levels, not direct pollen measurements. Higher scores indicate higher risk.
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).
