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

Today (9 August) pollen in Frogn kommune is high; mugwort is high; cypress and grass are low. Tomorrow (10 August 2026) levels are similar. Over the following five days grass will increase; cypress and mugwort will decrease. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.

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Lying along the inner Oslofjord shore south of Oslo, Frogn 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 Oslofjord coastal position means onshore winds can periodically disperse pollen, while the mild coastal climate advances the season slightly compared to more inland eastern Norwegian municipalities throughout.

Today - 9 August

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    Low

    14/100

  • Grass (Poaceae):

    Low

    5/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    High

    67/100

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 - 10 August

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    Low

    14/100

  • Grass (Poaceae):

    Low

    5/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    High

    68/100

Air quality in Frogn kommune

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Frequently Asked Questions

Is pollen high in Frogn kommune right now?

On 9 August 2026, overall pollen levels in Frogn kommune are high. Artemisia is the main contributor to airborne pollen, while grass and cypress remain at lower levels

Will pollen levels change in Frogn kommune tomorrow?

On 10 August 2026, pollen conditions in Frogn kommune will be similar to today, with grass at low levels, artemisia at high levels, cypress at low levels

Is pollen expected to decrease in Frogn kommune this week?

According to the five-day outlook, artemisia and cypress 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 Frogn kommune?

On 9 August 2026, Artemisia is the dominant pollen source in Frogn kommune. grass and cypress are also present but at lower levels. willow and hazel are not currently active.

When is pollen season in Frogn kommune?
Across Frogn kommune, the pollen season runs its course from February to August, with an early alder and hazel signal starting around February, before birch pollen takes hold most strongly through to May. Grass pollen then carries the season through the June-July stretch. With the combination of city parkland and nearby farmland around Frogn kommune, the local climate means pollen levels here don't always follow the national pattern exactly.
How often is the Frogn kommune pollen forecast updated?

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

Does pollen in Frogn 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 Frogn 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 Frogn 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:

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Data provided by Airmine — Last update: 10 August 2026 at 02:34 CEST (Data is updated four times daily.)

This page provides the latest public pollen forecast for Frogn kommune.

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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.