Porsgrunn kommune pollen forecast - today, tomorrow and the week ahead

Today (30 August) pollen in Porsgrunn kommune 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.

Get the full experience in the Airmine app.

Download on the App Store Get it on Google Play

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.

Learn more

Lying on the Grenland fjord in Telemark, Porsgrunn opens the pollen season with hazel from January before birch peaks through April and May. Grass from surrounding farmland peaks through June and July before mugwort extends exposure into September. The Frierfjord position means onshore winds can periodically disperse pollen, while the mild coastal Telemark climate advances the season compared to more inland Telemark municipalities throughout.

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

    23/100

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 Porsgrunn kommune

View air quality

Frequently Asked Questions

Is pollen high in Porsgrunn kommune right now?

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

Will pollen levels change in Porsgrunn kommune tomorrow?

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

Is pollen expected to decrease in Porsgrunn kommune 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 Porsgrunn kommune?

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

When is pollen season in Porsgrunn kommune?
Porsgrunn kommune's pollen calendar is bookended by February and August, with the first releases of alder and hazel from February, before birch takes over with a strong peak lasting through May. Grass pollen then carries the season over June and July. With the relatively mild Oslofjord-adjacent climate near Porsgrunn kommune, the local climate adds a distinct local flavour to how the wider Norwegian season plays out.
How often is the Porsgrunn kommune pollen forecast updated?

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

Does pollen in Porsgrunn kommune 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 Porsgrunn kommune 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 Porsgrunn kommune, 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 Porsgrunn kommune.

Get the full experience in the Airmine app.

Download on the App Store Get it on Google Play

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.