Rissa pollen forecast - today, tomorrow and the week ahead

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

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Rissa is a small Trøndelag village in Indre Fosen municipality on the Trondheimsfjord where birch, alder, and fjordside farmland vegetation are the main local pollen sources. The Trondheimsfjord position means onshore winds can periodically disperse pollen, while the Atlantic-influenced Trøndelag climate provides frequent rainfall interruptions and birch peaks through April and May before grass from surrounding Fosen farmland contributes through June and July throughout.

Today - 9 August

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    High

    58/100

  • Grass (Poaceae):

    Low

    5/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Medium

    30/100

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

    43/100

  • Grass (Poaceae):

    None

    0/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Low

    17/100

Air quality in Rissa

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Frequently Asked Questions

Is pollen high in Rissa right now?

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

Will pollen levels change in Rissa tomorrow?

On 10 August 2026, pollen conditions in Rissa will be different from today, with cypress, artemisia continuing to decline

Is pollen expected to decrease in Rissa this week?

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

Which pollen types are currently active in Rissa?

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

When is pollen season in Rissa?
Rissa's pollen calendar typically lasts from March through August, with alder and hazel arriving first already by March, with birch building to the season's sharpest peak which carries through May. From there, grass pollen continues through June and July. With the fjord-and-farmland mix that defines this part of Trøndelag, the local climate gives this area its own distinct rhythm within the wider Norwegian season.
How often is the Rissa pollen forecast updated?

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

Does pollen in Rissa 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 Rissa 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 Rissa, 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: 9 August 2026 at 20:27 CEST (Data is updated four times daily.)

This page provides the latest public pollen forecast for Rissa.

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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.