Spokane pollen forecast - today, tomorrow and the week ahead

Today (9 August) pollen in Spokane is medium; ragweed is medium; grass and mugwort are low. Tomorrow (10 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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Spokane's parks, including Riverfront Park and the Spokane River corridor, feature pine, birch, and oak as the main tree pollen sources, with exposure varying between these green areas and the more built-up city centre. Surrounding eastern Washington farmland and the ponderosa pine woodland of the Inland Northwest contribute substantial tree and grass pollen under prevailing westerly winds.

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

    4/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Low

    11/100

  • Ragweed (Ambrosia):

    Medium

    27/100

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

    5/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Low

    14/100

  • Ragweed (Ambrosia):

    Medium

    32/100

Air quality in Spokane

View air quality

Pollen forecast for neighborhoods and landmarks in Spokane

Browne's Addition Chief Garry Park East Central Spokane Hillyard Kendall Yards Manito Park Peaceful Valley Perry Street District Riverfront Park Riverside Avenue South Hill Spokane West Central

Frequently Asked Questions

Is pollen high in Spokane right now?

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

Will pollen levels change in Spokane tomorrow?

On 10 August 2026, pollen conditions in Spokane will be similar to today, with ambrosia at medium levels, artemisia at low levels, grass at low levels

Is pollen expected to decrease in Spokane 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 Spokane?

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

When is pollen season in Spokane?
Spokane's pollen season opens with birch and pine from late February, followed by oak through April and May. Grass pollen peaks through June and July. The semi-arid inland climate means fewer rainfall interruptions than on the Pacific coast, while the ponderosa pine woodland of the Inland Northwest contributes substantial tree pollen. The enclosed Spokane valley can concentrate pollen under calm conditions during spring.
How often is the Spokane pollen forecast updated?

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

Does pollen in Spokane 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 Spokane 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 Spokane, 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: 10 August 2026 at 02:34 CEST (Data is updated four times daily.)

This page provides the latest public pollen forecast for Spokane.

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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.