Bremerton pollen forecast - today, tomorrow and the week ahead

Today (30 August) pollen in Bremerton is moderate; grass and ragweed are moderate; mugwort is low. Tomorrow (31 August 2026) levels are similar - grass remains moderate, mugwort increasing, ragweed increasing. Over the following five days grass and ragweed will increase; mugwort will decrease. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.

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Bremerton's parks, including Evergreen-Rotary Park and the Port Washington Narrows corridor, feature alder, birch, and Douglas fir as the main tree pollen sources, with exposure varying between these green areas and the more built-up city centre. Surrounding Puget Sound woodland and the Olympic Peninsula foothills contribute substantial tree and grass pollen, while the coastal position means onshore winds can periodically disperse urban pollen.

Today - 30 August

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    Moderate

    26/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Low

    18/100

  • Ragweed (Ambrosia):

    Moderate

    45/100

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 - 31 August

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    Moderate

    49/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Moderate

    39/100

  • Ragweed (Ambrosia):

    High

    67/100

Air quality in Bremerton

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Frequently Asked Questions

Is pollen high in Bremerton right now?

On 30 August 2026, overall pollen levels in Bremerton are moderate. Grass is the main contributor to airborne pollen, while ambrosia and artemisia remain at lower levels

Will pollen levels change in Bremerton tomorrow?

On 31 August 2026, pollen conditions in Bremerton will be different from today, with grass at moderate levels and artemisia, ambrosia increasing

Is pollen expected to decrease in Bremerton this week?

According to the five-day outlook, artemisia pollen levels are expected to gradually decrease, while grass and ambrosia pollen will increase, suggesting mixed conditions later in the week.

Which pollen types are currently active in Bremerton?

On 30 August 2026, Grass is the dominant pollen source in Bremerton. ambrosia and artemisia are also present but at lower levels. cypress are not currently active.

When is pollen season in Bremerton?
Bremerton's pollen season opens with alder from January, followed by birch and Douglas fir through March and April. Grass pollen peaks through June and July. The Puget Sound coastal position means onshore winds can periodically disperse pollen, while surrounding Olympic Peninsula woodland and the Kitsap Peninsula forest contribute substantial tree pollen. Frequent Pacific rainfall provides regular interruptions to exposure throughout the season.
How often is the Bremerton pollen forecast updated?

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

Does pollen in Bremerton 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 Bremerton 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 Bremerton, 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 United States?

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Data provided by Airmine — Last update: 30 August 2026 at 14:32 CEST (Data is updated four times daily.)

This page provides the latest public pollen forecast for Bremerton.

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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.

Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.