Tønsberg pollen forecast - today, tomorrow and the week ahead

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

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Tønsberg's coastal setting on the Oslofjord features birch, oak, and alder as the main tree pollen sources in parks and along streets, with exposure varying between green areas and the more built-up city centre. Surrounding Vestfold farmland and coastal woodland contribute substantial tree and grass pollen, while the fjord position means onshore winds can periodically disperse urban pollen across the historic harbour city.

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

    11/100

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

    3/100

Air quality in Tønsberg

View air quality

Pollen and air quality along routes in Tønsberg

Kristinaløpet

Frequently Asked Questions

Is pollen high in Tønsberg right now?

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

Will pollen levels change in Tønsberg tomorrow?

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

Is pollen expected to decrease in Tønsberg this week?

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

Which pollen types are currently active in Tønsberg?

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

When is pollen season in Tønsberg?
Across Tønsberg, the pollen season covers the period from February through August, opening with alder and hazel from about February, with birch building to the season's sharpest peak into May. Grass pollen rounds out Tønsberg's season through the summer months of June and July. With the gentler climate typical of the inner Oslofjord region, the local climate gives the season a character that's shaped as much by geography as by month.
How often is the Tønsberg pollen forecast updated?

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

Does pollen in Tønsberg 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 Tønsberg 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 Tønsberg, 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 Norway?

Bergen Drammen Fredrikstad Kristiansand Oslo Sandefjord Stavanger Trondheim

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 Tønsberg.

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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.