Bar Harbor pollen forecast — Acadia National Park neighborhood

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

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Acadia National Park is an acadia's spruce-fir forest and rocky coastal headlands. Cool maritime air delays pollen season until late May. Birch and alder are the main spring producers; grasses follow in June. Short but sweet allergy window.

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

    41/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Low

    25/100

  • Ragweed (Ambrosia):

    Low

    18/100

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

    30/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Low

    15/100

  • Ragweed (Ambrosia):

    Low

    8/100

Other Landmarks in Bar Harbor

Acadia Carriage Roads Acadia National Park Cadillac Mountain

Frequently Asked Questions

Is pollen high in Bar Harbor right now?

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

Will pollen levels change in Bar Harbor tomorrow?

On 31 August 2026, pollen conditions in Bar Harbor will be similar to today, with ambrosia at low levels, artemisia at low levels, grass at moderate levels

Is pollen expected to decrease in Bar Harbor this week?

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

Which pollen types are currently active in Bar Harbor?

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

When is pollen season in Bar Harbor?
The pollen season at Acadia National Park mirrors Bar Harbor overall, starting with maple and elm in March then birch and oak builds through April and May. Grass pollen builds through June and July, and ragweed and mugwort keep weed pollen elevated into September. The New England climate compresses tree, grass, and weed pollen into a shorter but intense season, a defining feature of the local season.
How often is the Bar Harbor pollen forecast updated?

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

Does pollen in Bar Harbor 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 Bar Harbor 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 Bar Harbor, 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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Check pollen in other popular cities:

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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 Acadia National Park, Bar Harbor.

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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.