Arnhem pollen forecast - today, tomorrow and the week ahead

Today (9 August) pollen in Arnhem is high; mugwort is high; grass is medium. Tomorrow (10 August 2026) levels are similar - mugwort declining. Over the following five days grass and mugwort will increase. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.

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

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Arnhem's Sonsbeek Park and the Rhine River corridor feature oak, birch, and linden as the main tree pollen sources, with exposure varying between these green areas and the more built-up city centre. Surrounding Gelderland farmland and the Veluwe heathland and woodland contribute substantial grass and tree pollen, while the Rhine valley channels airflows and concentrates pollen across the city.

Today - 9 August

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    Medium

    27/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    High

    70/100

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 - 10 August

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    None

    0/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Medium

    48/100

Air quality in Arnhem

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Frequently Asked Questions

Is pollen high in Arnhem right now?

On 9 August 2026, overall pollen levels in Arnhem are high. Artemisia is the main contributor to airborne pollen, while grass remain at lower levels

Will pollen levels change in Arnhem tomorrow?

On 10 August 2026, pollen conditions in Arnhem will be different from today, with artemisia continuing to decline

Is pollen expected to decrease in Arnhem this week?

According to the five-day outlook, artemisia and grass pollen levels will increase later in the week.

Which pollen types are currently active in Arnhem?

On 9 August 2026, Artemisia is the dominant pollen source in Arnhem. grass are also present but at lower levels. hazel, cypress, and willow are not currently active.

When is pollen season in Arnhem?
Arnhem's pollen season runs from January through August, opening with hazel and alder from January before birch peaks through April. Oak and ash follow through April and May, with grass peaking through June and July. The Rhine valley concentrates pollen under calm conditions, while surrounding Gelderland farmland and Veluwe heathland extend grass and tree pollen into August. Frequent oceanic rainfall provides regular interruptions throughout the season.
How often is the Arnhem pollen forecast updated?

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

Does pollen in Arnhem 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 Arnhem 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 Arnhem, 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 Netherlands?

Check pollen in other popular cities:

Data provided by Airmine — Last update: 10 August 2026 at 02:34 CEST (Data is updated four times daily.)

This page provides the latest public pollen forecast for Arnhem.

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Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.

Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.