Longview pollen forecast - today, tomorrow and the week ahead

Today (16 July) pollen in Longview is low; grass is low. Tomorrow (17 July 2026) levels are similar - grass increasing, ragweed at low levels. Over the following five days ragweed will increase; grass will decrease. 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

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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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Longview's parks, including Lake Sacajawea and the Cowlitz River corridor, feature alder, cottonwood, and Douglas fir as the main tree pollen sources, with exposure varying between these green areas and the more built-up city centre. Surrounding Pacific Northwest woodland and the Columbia River valley contribute substantial tree and grass pollen, while the river corridor channels prevailing westerly winds and marine air from the coast.

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

    4/100

  • 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):

    Medium

    36/100

  • Oak (Quercus):

    None

    0/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    None

    0/100

  • Ragweed (Ambrosia):

    Low

    17/100

Air quality in Longview

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Frequently Asked Questions

Is pollen high in Longview right now?

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

Will pollen levels change in Longview tomorrow?

On 17 July 2026, pollen conditions in Longview will be different from today, with ambrosia at low levels and grass increasing

Is pollen expected to decrease in Longview this week?

According to the five-day outlook, grass pollen levels are expected to gradually decrease, while ambrosia pollen will increase, suggesting mixed conditions later in the week.

Which pollen types are currently active in Longview?

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

When is pollen season in Longview?
Longview's East Texas setting produces a season opening in late January with pine and oak before grass from surrounding East Texas farmland peaks through April and May. Mugwort and nettle extend exposure into September, while the warm, humid Pineywoods climate advances the season and the flat East Texas landscape allows pollen to disperse widely throughout the region.
How often is the Longview pollen forecast updated?

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

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

This page provides the latest public pollen forecast for Longview.

For long term forecasts and maps, see the Airmine app

Download on the App Store Get it on Google Play

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