Kennewick pollen forecast - today, tomorrow and the week ahead

Today (16 July) pollen in Kennewick is low; grass is low. Tomorrow (17 July 2026) levels are similar. Over the following five days grass will increase. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.

For long term forecasts and maps, see the Airmine app

Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team

Use our Strava plugin to check your own exposure.

Kennewick's parks, including Columbia Park and the Columbia River corridor, feature cottonwood, ash, and sage as the main pollen sources, with exposure varying between the riverside green areas and the more built-up city centre. Surrounding eastern Washington farmland and the semi-arid shrub-steppe landscape contribute substantial grass and sagebrush pollen that disperses widely across the Tri-Cities area under prevailing westerly winds.

Today - 16 July

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    Low

    2/100

  • Oak (Quercus):

    None

    0/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    None

    0/100

  • Ragweed (Ambrosia):

    None

    0/100

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 - 17 July

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    Low

    7/100

  • Oak (Quercus):

    None

    0/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    None

    0/100

  • Ragweed (Ambrosia):

    None

    0/100

Air quality in Kennewick

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Frequently Asked Questions

Is pollen high in Kennewick right now?

On 16 July 2026, overall pollen levels in Kennewick are low. Grass is the main contributor to airborne pollen

Will pollen levels change in Kennewick tomorrow?

On 17 July 2026, pollen conditions in Kennewick will be similar to today, with grass at low levels

Is pollen expected to decrease in Kennewick this week?

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

Which pollen types are currently active in Kennewick?

On 16 July 2026, Grass is the dominant pollen source in Kennewick. oak, willow, alder, ambrosia, artemisia, birch, and cypress are not currently active.

When is pollen season in Kennewick?
Kennewick's pollen season opens with cottonwood and sage from late February, followed by ash through March and April. Grass pollen peaks strongly through May and June in the surrounding Yakima and Columbia Valley agricultural landscape. The semi-arid shrub-steppe climate means fewer rainfall interruptions than in wetter US cities, while the flat, open Columbia River basin allows pollen to disperse widely across the Tri-Cities area.
How often is the Kennewick pollen forecast updated?

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

Does pollen in Kennewick 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 Kennewick 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 Kennewick, 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: 16 July 2026 at 10:33 CEST (Data is updated four times daily.)

This page provides the latest public pollen forecast for Kennewick.

For long term forecasts and maps, see the Airmine app

Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.