Harlingen pollen forecast - today, tomorrow and the week ahead

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

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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 Harlingen, oak, birch, and linden are the leading tree pollen contributors in parks and residential streets, though levels vary noticeably between the dense centre and the leafier edges of town. Nearby, the Wadden Sea coast together with Fryslân farmland contributes further grass and tree pollen, in keeping with Harlingen's character as a Wadden Sea port town.

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

    33/100

  • 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 Harlingen

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Frequently Asked Questions

Is pollen high in Harlingen right now?

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

Will pollen levels change in Harlingen tomorrow?

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

Is pollen expected to decrease in Harlingen this week?

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

Which pollen types are currently active in Harlingen?

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

When is pollen season in Harlingen?
Harlingen's pollen season stretches from January to August, starting with hazel and alder catkins in deep winter before birch takes over through April. Oak and ash step in during April and May, after which grass becomes the standout source over June and July. Local dispersal is influenced by the Wadden Sea coast, and the historic ferry port to the Wadden Islands is characteristic of Harlingen and its surroundings.
How often is the Harlingen pollen forecast updated?

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

Does pollen in Harlingen 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 Harlingen 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 Harlingen, 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 10:33 CEST (Data is updated four times daily.)

This page provides the latest public pollen forecast for Harlingen.

For long term forecasts and maps, see the Airmine app

Download on the App Store Get it on Google Play

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