Karlshus pollen forecast - today, tomorrow and the week ahead

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

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Karlshus is a small Østfold village in Råde municipality on the Råde coastal plain where birch, hazel, and farmland edge vegetation are the main local pollen sources. The flat, open southeastern Norwegian landscape allows pollen to disperse widely, while the relatively dry Østfold climate means fewer rainfall interruptions than in western Norway and birch peaks through April and May before grass contributes through June and July and mugwort extends into September.

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

    11/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    High

    65/100

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

    13/100

  • Grass (Poaceae):

    Low

    10/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    High

    65/100

Air quality in Karlshus

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Frequently Asked Questions

Is pollen high in Karlshus right now?

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

Will pollen levels change in Karlshus tomorrow?

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

Is pollen expected to decrease in Karlshus this week?

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

Which pollen types are currently active in Karlshus?

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

When is pollen season in Karlshus?
Pollen in Karlshus covers the period from February through August, with an early alder and hazel signal from about February, before birch pollen takes hold most strongly before easing after May. Karlshus then sees grass pollen continue across June and July. With the relatively mild Oslofjord-adjacent climate near Karlshus, the local climate means the exact timing here can shift a little from year to year.
How often is the Karlshus pollen forecast updated?

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

Does pollen in Karlshus 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 Karlshus 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 Karlshus, 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?

Check pollen in other popular cities:

Data provided by Airmine — Last update: 9 August 2026 at 20:27 CEST (Data is updated four times daily.)

This page provides the latest public pollen forecast for Karlshus.

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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.