Sion pollen forecast — Vieille Ville Sion neighborhood
Today (16 July) pollen in Vieille Ville Sion, Sion is medium; grass is medium. Tomorrow (17 July 2026) levels are similar - grass declining. Over the following five days grass will increase. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Use our Strava plugin to check your own exposure.
Vieille Ville Sion features linden and vineyard vegetation as the main pollen sources, with exposure concentrated in this historic quarter beneath the Valère and Tourbillon hills in Switzerland's driest region.
Today - 16 July
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
None
0/100
-
Grass (Poaceae):
Medium
33/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
None
0/100
High pollen levels may trigger sneezing, itchy eyes, and congestion. Airmine's neighbourhood estimates use satellites to map local vegetation and a statistical prediction model, updated four times daily.
Tomorrow - 17 July
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
None
0/100
-
Grass (Poaceae):
Low
25/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
None
0/100
Other Landmarks in Sion
Frequently Asked Questions
Is pollen high in Sion right now?
On 16 July 2026, overall pollen levels in Sion are moderate. Grass is the main contributor to airborne pollen
Will pollen levels change in Sion tomorrow?
On 17 July 2026, pollen conditions in Sion will be different from today, with grass continuing to decline
Is pollen expected to decrease in Sion this week?
According to the five-day outlook, grass and cypress pollen levels will increase later in the week.
Which pollen types are currently active in Sion?
On 16 July 2026, Grass is the dominant pollen source in Sion. willow, alder, artemisia, birch, hazel, and cypress are not currently active.
When is pollen season in Sion?
How often is the Sion pollen forecast updated?
The Sion pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Sion 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 Sion 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 Sion, 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.
Want to see pollen forecasts for other cities in Switzerland?
Check pollen in other popular cities:
Data provided by Airmine — Last update: 16 July 2026 at 10:33 CEST (Data is updated four times daily.)
This page provides the latest public pollen forecast for Vieille Ville Sion, Sion.
For long term forecasts and maps, see the Airmine app
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.