Irún pollen forecast - today, tomorrow and the week ahead
Today (25 June) pollen in Irún is low; grass is low. Tomorrow (26 June 2026) levels are similar - grass increasing. 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
Irún's Bidasoa River corridor and the surrounding Basque woodland feature oak, birch, and chestnut as the main tree pollen sources in this Pyrenean border city. Surrounding Basque farmland and Cantabrian Mountain woodland contribute substantial tree and grass pollen, while the very wet Atlantic climate means frequent rainfall provides regular interruptions and the river channels airflows across the border setting.
Today - 25 June
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
None
0/100
-
Grass (Poaceae):
Low
16/100
-
Willow (Salicaceae):
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 - 26 June
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
None
0/100
-
Grass (Poaceae):
Medium
28/100
-
Willow (Salicaceae):
None
0/100
Frequently Asked Questions
Is pollen high in Irún right now?
On 25 June 2026, overall pollen levels in Irún are low. Grass is the main contributor to airborne pollen
Will pollen levels change in Irún tomorrow?
On 26 June 2026, pollen conditions in Irún will be different from today, with grass increasing
Is pollen expected to decrease in Irún this week?
According to the five-day outlook, grass pollen levels will increase later in the week.
Which pollen types are currently active in Irún?
On 25 June 2026, Grass is the dominant pollen source in Irún. alder, birch, hazel, cypress, and willow are not currently active.
When is pollen season in Irún?
How often is the Irún pollen forecast updated?
The Irún pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Irún 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 Irún 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 Irún, 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 Spain?
Check pollen in other popular cities:
Data provided by Airmine — Last update: 25 Jun 2026, 09:01 CET (Data is updated four times daily.)
This page provides the latest public pollen forecast for Irún.
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
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.