Granollers pollen forecast - today, tomorrow and the week ahead

Today (25 June) pollen in Granollers is medium; grass is medium. Tomorrow (26 June 2026) levels are similar - grass increasing. Over the following five days grass will decrease. 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

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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team

Granollers' Congost and Besòs river corridors and surrounding suburban green spaces feature oak, pine, and plane as the main tree pollen sources. The Montseny massif to the north is a particularly significant regional tree pollen source, while surrounding Catalan pre-coastal farmland contributes grass pollen and the Vallès Oriental valley channels airflows under prevailing northerly winds throughout.

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):

    Medium

    50/100

  • 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):

    High

    59/100

  • Willow (Salicaceae):

    None

    0/100

Frequently Asked Questions

Is pollen high in Granollers right now?

On 25 June 2026, overall pollen levels in Granollers are moderate. Grass is the main contributor to airborne pollen

Will pollen levels change in Granollers tomorrow?

On 26 June 2026, pollen conditions in Granollers will be different from today, with grass increasing

Is pollen expected to decrease in Granollers this week?

According to the five-day outlook, grass pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.

Which pollen types are currently active in Granollers?

On 25 June 2026, Grass is the dominant pollen source in Granollers. alder, birch, hazel, cypress, and willow are not currently active.

When is pollen season in Granollers?
Granollers' Vallès Oriental valley channels airflows during the sub-Mediterranean season opening in January with hazel, olive, and cypress before plane and oak peak through March and April. Cypress contributes from January through spring. Grass from surrounding Catalan farmland peaks through May and June, while mugwort and nettle extend exposure into September and the relatively dry climate means fewer rainfall interruptions than in Atlantic-facing Spain.
How often is the Granollers pollen forecast updated?

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

Does pollen in Granollers 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 Granollers 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 Granollers, 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?

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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 Granollers.

For long term forecasts and maps, see the Airmine app

Download on the App Store Get it on Google Play

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.