St. Moritz pollen forecast — Engadin Skimarathon Start (Silvaplana) neighborhood

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

On 17 July 2026, pollen conditions in St. Moritz will be different from today, with cypress at low levels, grass at medium levels, willow at low levels

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

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

At Engadin Skimarathon Start (Silvaplana), the pollen season is short and shaped by elevation, running from roughly June through August as larch and alpine meadow grasses take over lower on the slopes. The usual hazel-to-birch spring progression is largely absent here, with exposure dropping away quickly above the treeline as vegetation and pollen output both thin considerably.

The St. Moritz 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 St. Moritz, 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.