Marl pollen forecast - today, tomorrow and the week ahead

Today (25 June) pollen in Marl is medium; grass is medium; cypress is low. Tomorrow (26 June 2026) levels are similar. 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

Marl's parks and the Rhine-Herne Canal corridor feature oak, birch, and alder as the main tree pollen sources, with exposure varying between these green areas and the more built-up industrial city centre. Surrounding Westphalian farmland and Ruhr Valley woodland contribute substantial grass and tree pollen, while the temperate oceanic climate means frequent rainfall provides regular interruptions to exposure throughout the season.

Today - 25 June

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    Low

    2/100

  • Grass (Poaceae):

    Medium

    32/100

  • 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):

    Low

    16/100

  • Grass (Poaceae):

    Medium

    45/100

  • Willow (Salicaceae):

    None

    0/100

Frequently Asked Questions

Is pollen high in Marl right now?

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

Will pollen levels change in Marl tomorrow?

On 26 June 2026, pollen conditions in Marl will be similar to today, with grass at medium levels, cypress at low levels

Is pollen expected to decrease in Marl this week?

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

Which pollen types are currently active in Marl?

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

When is pollen season in Marl?
Marl's pollen season runs from January through August, opening with hazel and alder from January before birch peaks through April. Oak and alder follow through April and May, with grass peaking through June and July. The Rhine-Herne Canal corridor and surrounding Westphalian farmland and Ruhr Valley woodland contribute substantial grass and tree pollen, while frequent oceanic rainfall provides regular interruptions throughout the season.
How often is the Marl pollen forecast updated?

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

Does pollen in Marl 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 Marl 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 Marl, 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 Germany?

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 Marl.

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.