Sigtuna pollen forecast - today, tomorrow and the week ahead

Today (30 August) pollen in Sigtuna is low; grass and mugwort are low. Tomorrow (31 August 2026) levels are similar. 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

Follow your pollen exposure and performance with the free Airmine–Strava integration. See your pollen and air quality exposure for every Strava activity.

Tree cover in Sigtuna is dominated by birch, birch, and oak, concentrated in parks and along the water's edge rather than in the city centre. Because open farmland sits close to Lake Mälaren's northern shore, grass and crop pollen move freely across the area. Whether someone lives near a park or in the built-up centre of Sigtuna makes more difference to pollen exposure than aviation logistics near Arlanda.

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):

    Low

    9/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Low

    17/100

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):

    Low

    2/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Low

    8/100

Air quality in Sigtuna

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Sports venues in Sigtuna

Frequently Asked Questions

Is pollen high in Sigtuna right now?

On 30 August 2026, overall pollen levels in Sigtuna are low. Artemisia is the main contributor to airborne pollen, while grass remain at lower levels

Will pollen levels change in Sigtuna tomorrow?

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

Is pollen expected to decrease in Sigtuna 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 Sigtuna?

On 30 August 2026, Artemisia is the dominant pollen source in Sigtuna. grass are also present but at lower levels. willow, hazel, and cypress are not currently active.

When is pollen season in Sigtuna?
Sigtuna's pollen season runs from February through August, opening with alder from February before birch peaks strongly through May. Grass pollen then dominates for several weeks in June and July before gradually easing. Sigtuna's location relative to Lake Mälaren's northern shore means daily pollen readings can swing with changes in wind direction. Surrounding birch-dominated woodland and farmland extend the tail of the season into August.
How often is the Sigtuna pollen forecast updated?

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

Does pollen in Sigtuna 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 Sigtuna 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 Sigtuna, 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?

Check pollen in other popular cities:

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 Sigtuna.

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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.