Rena pollen forecast - today, tomorrow and the week ahead

Today (9 August) pollen in Rena is high; mugwort is high; cypress is medium; grass is low. Tomorrow (10 August 2026) levels are similar - cypress remains medium, grass remains low, mugwort declining. 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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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team

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Rena is a small Innlandet village in Åmot municipality on the Glomma River in Østerdalen where birch, hazel, and riverside boreal woodland are the main local pollen sources. The Glomma valley concentrates pollen under calm conditions, while the inland continental Østerdalen climate produces a well-defined seasonal progression with birch peaking through April and May before grass contributes through June and July and mugwort extends exposure into September.

Today - 9 August

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    Medium

    42/100

  • Grass (Poaceae):

    Low

    12/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    High

    53/100

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):

    Medium

    34/100

  • Grass (Poaceae):

    Low

    3/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Medium

    45/100

Air quality in Rena

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Frequently Asked Questions

Is pollen high in Rena right now?

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

Will pollen levels change in Rena tomorrow?

On 10 August 2026, pollen conditions in Rena will be different from today, with cypress at medium levels, grass at low levels and artemisia continuing to decline

Is pollen expected to decrease in Rena this week?

According to the five-day outlook, cypress and 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 Rena?

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

When is pollen season in Rena?
Rena's seasonal pollen activity gets underway in March and lasts through August, opening gently with alder and hazel in March, followed by a sharp birch peak into May. Rena then sees grass pollen continue and holds through June and July. With the more continental inland climate around Rena, the local climate means conditions here can diverge a bit from the textbook national timeline.
How often is the Rena pollen forecast updated?

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

Does pollen in Rena 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 Rena 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 Rena, 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 Rena.

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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.