Pullman pollen forecast - today, tomorrow and the week ahead

Today (9 August) pollen in Pullman is low; grass, mugwort, and ragweed are low. Tomorrow (10 August 2026) levels are similar - grass remains low, mugwort remains low, 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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Pullman sits on the rolling wheat country of the Palouse, where the dominant vegetation is a mix of wheat and canola fields, Ponderosa pine on the campus grounds, and native prairie grasses, shaping the local pollen profile across the seasons. Exposure varies with proximity to green space versus the more built-up parts of Pullman. The mix of native and introduced species here is fairly typical for this part of the country.

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

    11/100

  • Ragweed (Ambrosia):

    Low

    21/100

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

    6/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Low

    20/100

  • Ragweed (Ambrosia):

    Medium

    28/100

Air quality in Pullman

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Frequently Asked Questions

Is pollen high in Pullman right now?

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

Will pollen levels change in Pullman tomorrow?

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

Is pollen expected to decrease in Pullman 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 Pullman?

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

When is pollen season in Pullman?
The pollen calendar in Pullman opens with alder and birch starting February with maple following close behind through March and April. Peak grass pollen arrives in May and June, and dock and mugwort keep weed pollen elevated into September. The mild, wet Pacific Northwest climate and frequent spring rain periodically wash pollen from the air, a defining feature of the local season.
How often is the Pullman pollen forecast updated?

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

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

This page provides the latest public pollen forecast for Pullman.

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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.