Holzminden pollen forecast - today, tomorrow and the week ahead

Today (20 July) pollen in Holzminden is low; grass is low. Tomorrow (21 July 2026) levels are similar - grass increasing, cypress at low levels, mugwort at low levels. Over the following five days cypress, grass, and mugwort 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

Use our Strava plugin to check your own exposure.

Across Holzminden, maple, birch, and oak form the backbone of local tree pollen, with parks and gardens more exposed than the town centre. Nearby Lower Saxon farmland along with farm shelterbelts add tree and grass pollen through the season, while the foothill setting can locally concentrate pollen under calm air.

Today - 20 July

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    Low

    24/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    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 - 21 July

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    Low

    19/100

  • Grass (Poaceae):

    Medium

    49/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Low

    20/100

Air quality in Holzminden

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Frequently Asked Questions

Is pollen high in Holzminden right now?

On 20 July 2026, overall pollen levels in Holzminden are low. Grass is the main contributor to airborne pollen

Will pollen levels change in Holzminden tomorrow?

On 21 July 2026, pollen conditions in Holzminden will be different from today, with artemisia at low levels, cypress at low levels and grass increasing

Is pollen expected to decrease in Holzminden this week?

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

Which pollen types are currently active in Holzminden?

On 20 July 2026, Grass is the dominant pollen source in Holzminden. willow, alder, artemisia, birch, hazel, and cypress are not currently active.

When is pollen season in Holzminden?
Holzminden's pollen season extends from January to August, starting with alder and hazel from late January then birch pollen dominating April into May. Grass pollen takes over across June and July. It lies within the inland Lower Saxon countryside, where farmland gives way to Harz foothill woodland nearby, keeping mixed farmland and woodland pollen elevated into summer.
How often is the Holzminden pollen forecast updated?

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

Does pollen in Holzminden 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 Holzminden 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 Holzminden, 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: 20 July 2026 at 16:32 CEST (Data is updated four times daily.)

This page provides the latest public pollen forecast for Holzminden.

For long term forecasts and maps, see the Airmine app

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