Okanogan pollen forecast - today, tomorrow and the week ahead

Today (9 August) pollen in Okanogan is medium; mugwort is medium; grass and ragweed 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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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team

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Set on an orchard-farming valley along the Okanogan River in north-central Washington, Okanogan's landscape is defined by irrigated orchard rows alongside riverside cottonwood and sagebrush foothills, the main contributors to seasonal pollen exposure. Local parks and open ground tend to see higher pollen counts than the denser urban core. Small local variations aside, this pattern holds fairly steady from year to year.

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

    5/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Medium

    30/100

  • Ragweed (Ambrosia):

    Low

    15/100

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

    9/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Medium

    40/100

  • Ragweed (Ambrosia):

    Low

    23/100

Air quality in Okanogan

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Frequently Asked Questions

Is pollen high in Okanogan right now?

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

Will pollen levels change in Okanogan tomorrow?

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

Is pollen expected to decrease in Okanogan this week?

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

Which pollen types are currently active in Okanogan?

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

When is pollen season in Okanogan?
Pollen season in Okanogan starts with alder and birch in February then maple follows, running through March and April. Peak grass pollen arrives in May and June, and dock and mugwort keep weed pollen elevated into September. Frequent spring rain across the Pacific Northwest periodically clears pollen from the air, moderating peak counts.
How often is the Okanogan pollen forecast updated?

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

Does pollen in Okanogan 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 Okanogan 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 Okanogan, 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 Okanogan.

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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.