Härnösand pollen forecast - today, tomorrow and the week ahead

Today (30 August) pollen in Härnösand is low; mugwort is low. Tomorrow (31 August 2026) levels are similar. Over the following five days mugwort will decrease. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.

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Härnösand relies on spruce, birch, and oak in its parks and green belts as the principal tree pollen sources. Wherever farmland meets the mouth of the Ångermanälven river, grass and crop pollen tend to disperse over a wide area. Forestry and public administration plays little role in vegetation-driven pollen here, which is shaped instead by the surrounding countryside.

Today - 30 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):

    Low

    24/100

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 - 31 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):

    Low

    21/100

Air quality in Härnösand

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Frequently Asked Questions

Is pollen high in Härnösand right now?

On 30 August 2026, overall pollen levels in Härnösand are low. Artemisia is the main contributor to airborne pollen

Will pollen levels change in Härnösand tomorrow?

On 31 August 2026, pollen conditions in Härnösand will be similar to today, with artemisia at low levels

Is pollen expected to decrease in Härnösand this week?

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

Which pollen types are currently active in Härnösand?

On 30 August 2026, Artemisia is the dominant pollen source in Härnösand. grass, willow, hazel, and cypress are not currently active.

When is pollen season in Härnösand?
Härnösand sees a delayed but intense pollen season, starting with alder in March and building to a compact birch peak by June. June and July then belong to grass pollen, which builds steadily as birch fades. Because of its position near the mouth of the Ångermanälven river, Härnösand experiences pollen dispersal patterns that shift with the local wind direction. What keeps the season going into August here is largely the surrounding spruce forest and open agricultural land.
How often is the Härnösand pollen forecast updated?

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

Does pollen in Härnösand 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 Härnösand 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 Härnösand, 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 Sweden?

Borås Gothenburg Helsingborg Linköping Malmö Norrköping Örebro Stockholm Uppsala Västerås

Check pollen in other popular cities:

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

Data provided by Airmine — Last update: 30 August 2026 at 14:32 CEST (Data is updated four times daily.)

This page provides the latest public pollen forecast for Härnösand.

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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.

Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.