Twisp pollen forecast - today, tomorrow and the week ahead

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

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Twisp sits on the Methow Valley in the eastern Cascades, where the dominant vegetation is a mix of ponderosa pine, cottonwood along the river, and sagebrush hillsides, shaping the local pollen profile across the seasons. Exposure varies with proximity to green space versus the more built-up parts of Twisp. Residents who spend time outdoors around Twisp typically notice the shift as each season turns over.

Today - 9 August

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    Low

    1/100

  • 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 - 10 August

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    Low

    8/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Medium

    34/100

  • Ragweed (Ambrosia):

    Medium

    28/100

Air quality in Twisp

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Frequently Asked Questions

Is pollen high in Twisp right now?

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

Will pollen levels change in Twisp tomorrow?

On 10 August 2026, pollen conditions in Twisp will be different from today, with grass at low levels and ambrosia, artemisia increasing

Is pollen expected to decrease in Twisp 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 Twisp?

On 9 August 2026, Ambrosia is the dominant pollen source in Twisp. artemisia and grass are also present but at lower levels. cypress are not currently active.

When is pollen season in Twisp?
The pollen calendar in Twisp opens with alder and birch starting February with maple following close behind through March and April. Grass follows, peaking through May and June, while mugwort and nettle extend exposure into September. The mild, wet Pacific Northwest climate and frequent spring rain periodically wash pollen from the air.
How often is the Twisp pollen forecast updated?

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

Does pollen in Twisp 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 Twisp 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 Twisp, 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?

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 Twisp.

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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.