Aarhus pollen forecast - today, tomorrow and the week ahead

Today (25 June) pollen in Aarhus is medium; grass is medium; cypress is low. Tomorrow (26 June 2026) levels are similar - cypress increasing, grass increasing. Over the following five days cypress and 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

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

Aarhus' parks and the Aarhus River corridor feature oak, birch, and ash as the main tree pollen sources, with exposure varying between green areas and the more built-up city centre. Surrounding Danish farmland and the Jutland heathland contribute substantial grass and tree pollen, while the coastal position on Aarhus Bay means onshore easterly winds can periodically disperse urban pollen.

Today - 25 June

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    Low

    7/100

  • Grass (Poaceae):

    Medium

    29/100

  • 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):

    Medium

    34/100

  • Grass (Poaceae):

    High

    58/100

  • Willow (Salicaceae):

    None

    0/100

Pollen forecast for neighborhoods and landmarks in Aarhus

Frequently Asked Questions

Is pollen high in Aarhus right now?

On 25 June 2026, overall pollen levels in Aarhus are moderate. Grass is the main contributor to airborne pollen, while cypress remain at lower levels

Will pollen levels change in Aarhus tomorrow?

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

Is pollen expected to decrease in Aarhus this week?

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

Which pollen types are currently active in Aarhus?

On 25 June 2026, Grass is the dominant pollen source in Aarhus. cypress are also present but at lower levels. birch, hazel, willow, and alder are not currently active.

When is pollen season in Aarhus?
Aarhus' pollen season runs from January through August, opening with hazel and alder from January before birch peaks strongly through April and May. Grass pollen peaks through June and July. The coastal position on Aarhus Bay means onshore easterly winds can periodically disperse pollen, while surrounding Danish farmland and Jutland heathland contribute substantial grass and tree pollen throughout the season.
How often is the Aarhus pollen forecast updated?

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

Does pollen in Aarhus 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 Aarhus 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 Aarhus, 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 Denmark?

Check pollen in other popular cities:

Data provided by Airmine — Last update: 25 Jun 2026, 09:00 CET (Data is updated four times daily.)

This page provides the latest public pollen forecast for Aarhus.

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.