Klosters pollen forecast - today, tomorrow and the week ahead

On 16 July 2026, overall pollen levels in Klosters are high. Grass is the main contributor to airborne pollen, while hazel, cypress, and willow remain at lower levels

On 17 July 2026, pollen conditions in Klosters will be different from today, with cypress at low levels and grass continuing to decline

According to the five-day outlook, cypress pollen levels are expected to gradually decrease, while hazel, grass, and willow pollen will increase, suggesting mixed conditions later in the week.

On 16 July 2026, Grass is the dominant pollen source in Klosters. hazel, cypress, and willow are also present but at lower levels. alder, artemisia, and birch are not currently active.

Early January brings hazel and alder to Klosters, birch follows with a peak through April and May, spruce and larch extend the tree season, and grass then peaks through June and July. Steep terrain here tends to keep pollen close to the valley floor on still days, while forested slopes and meadows nearby add through the short summer. Altitude here pushes the season later than in the lowland cities of the Mittelland.

The Klosters pollen forecast is updated four times daily. See the timestamp below for the most recent update.

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.

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 Klosters, 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.