Woerden pollen forecast - today, tomorrow and the week ahead

Today (16 July) pollen in Woerden is medium; grass is medium. Tomorrow (17 July 2026) levels are similar. Over the following five days grass will increase. 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

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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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Woerden's Oude Rijn River corridor and surrounding green spaces feature oak, birch, and alder as the main tree pollen sources, with exposure varying between these riverside areas and the more built-up city centre. Surrounding South Holland and Utrecht farmland and the flat, open polder landscape contribute substantial grass and crop pollen, while the river corridor channels airflows and concentrates pollen across the area.

Today - 16 July

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    Medium

    38/100

  • 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 - 17 July

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    Medium

    33/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    None

    0/100

Air quality in Woerden

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Frequently Asked Questions

Is pollen high in Woerden right now?

On 16 July 2026, overall pollen levels in Woerden are moderate. Grass is the main contributor to airborne pollen

Will pollen levels change in Woerden tomorrow?

On 17 July 2026, pollen conditions in Woerden will be similar to today, with grass at medium levels

Is pollen expected to decrease in Woerden this week?

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

Which pollen types are currently active in Woerden?

On 16 July 2026, Grass is the dominant pollen source in Woerden. alder, artemisia, birch, hazel, cypress, and willow are not currently active.

When is pollen season in Woerden?
Woerden'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 Oude Rijn River corridor channels airflows, while surrounding South Holland and Utrecht polder farmland extend substantial grass and crop pollen into August under prevailing westerly winds.
How often is the Woerden pollen forecast updated?

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

Does pollen in Woerden 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 Woerden 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 Woerden, 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?

Almere Amsterdam Breda Eindhoven Groningen Nijmegen Rotterdam The Hague Tilburg Utrecht

Check pollen in other popular cities:

Rio de Janeiro Copenhagen Athens Denpasar Rome Cape Town Barcelona London Los Angeles New York

Data provided by Airmine — Last update: 16 July 2026 at 05:36 CEST (Data is updated four times daily.)

This page provides the latest public pollen forecast for Woerden.

For long term forecasts and maps, see the Airmine app

Download on the App Store Get it on Google Play

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