Siegen pollen forecast - today, tomorrow and the week ahead

Today (9 August) pollen in Siegen is high; mugwort is high; grass is low. Tomorrow (10 August 2026) levels are similar - mugwort remains high. Over the following five days grass will increase; mugwort will decrease. 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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Around Siegen, hornbeam, spruce, and beech stand out as the leading tree pollen sources in parks and gardens, with exposure shifting between green space and centre. Beyond the town, Sauerland farmland and mixed conifer stands add further tree and grass pollen, while the valley and ridge setting channels airflows across the town.

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):

    Low

    25/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    High

    72/100

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):

    High

    64/100

Air quality in Siegen

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Frequently Asked Questions

Is pollen high in Siegen right now?

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

Will pollen levels change in Siegen tomorrow?

On 10 August 2026, pollen conditions in Siegen will be different from today, with artemisia at high levels

Is pollen expected to decrease in Siegen this week?

According to the five-day outlook, artemisia pollen levels are expected to gradually decrease, while grass pollen will increase, suggesting mixed conditions later in the week.

Which pollen types are currently active in Siegen?

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

When is pollen season in Siegen?
Siegen's pollen season runs from January through August, beginning with alder and hazel from January with birch levels peaking during April and into May. Grass pollen peaks next, running through June and July. The forested hills of the Sauerland uplands rise around Siegen, with mixed beech and spruce woodland covering the ridgelines, keeping tree pollen levels elevated into early summer.
How often is the Siegen pollen forecast updated?

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

Does pollen in Siegen 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 Siegen 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 Siegen, 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: 9 August 2026 at 20:27 CEST (Data is updated four times daily.)

This page provides the latest public pollen forecast for Siegen.

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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.