Brønnøysund pollen forecast - today, tomorrow and the week ahead

Today (16 July) pollen in Brønnøysund is medium; cypress and grass are medium. Tomorrow (17 July 2026) levels are similar - cypress declining, grass declining. Over the following five days cypress and grass will increase. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.

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Brønnøysund is a small Nordland coastal town in Brønnøy municipality on the Helgeland coast where birch, alder, and coastal farmland vegetation are the main local pollen sources. The Norwegian Sea coastal position means onshore winds can periodically disperse pollen, while the subarctic Atlantic climate provides regular rainfall interruptions and birch peaks through May before grass from surrounding Helgeland farmland contributes through June and July throughout.

Today - 16 July

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    Medium

    30/100

  • Grass (Poaceae):

    Medium

    37/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    None

    0/100

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 - 17 July

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    Low

    11/100

  • Grass (Poaceae):

    Low

    16/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    None

    0/100

Air quality in Brønnøysund

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Frequently Asked Questions

Is pollen high in Brønnøysund right now?

On 16 July 2026, overall pollen levels in Brønnøysund are moderate. Cypress is the main contributor to airborne pollen, while grass remain at lower levels

Will pollen levels change in Brønnøysund tomorrow?

On 17 July 2026, pollen conditions in Brønnøysund will be different from today, with cypress, grass continuing to decline

Is pollen expected to decrease in Brønnøysund this week?

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

Which pollen types are currently active in Brønnøysund?

On 16 July 2026, Cypress is the dominant pollen source in Brønnøysund. grass are also present but at lower levels. alder, artemisia, birch, hazel, and willow are not currently active.

When is pollen season in Brønnøysund?
Pollen in Brønnøysund stretches from March through August, with alder and hazel marking the early stage from March, with birch soon overtaking as the main source running through June. Brønnøysund then sees grass pollen continue through the June-July stretch. With the maritime climate that moderates temperature swings near Brønnøysund, the local climate means residents often notice a slightly different pattern than official averages suggest.
How often is the Brønnøysund pollen forecast updated?

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

Does pollen in Brønnøysund 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 Brønnøysund 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 Brønnøysund, 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 Sandvika Stavanger Trondheim

Check pollen in other popular cities:

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Data provided by Airmine — Last update: 16 July 2026 at 05:36 CEST (Data is updated four times daily.)

This page provides the latest public pollen forecast for Brønnøysund.

For long term forecasts and maps, see the Airmine app

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