Marysville pollen forecast - today, tomorrow and the week ahead

Today (16 July) pollen in Marysville is low; grass is low. Tomorrow (17 July 2026) levels are similar - grass remains low, ragweed at low levels. Over the following five days grass and ragweed 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.

Marysville's suburban setting north of Sacramento features oak, ash, and walnut as the main tree pollen sources in parks and along residential streets, with exposure varying between these green areas and the more built-up city centre. Surrounding Sacramento Valley farmland and the Yuba and Feather River corridors contribute substantial grass and crop pollen, while the flat, open valley landscape allows pollen to disperse readily across the area.

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

    5/100

  • 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

    19/100

  • Oak (Quercus):

    None

    0/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    None

    0/100

  • Ragweed (Ambrosia):

    Low

    6/100

Air quality in Marysville

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Frequently Asked Questions

Is pollen high in Marysville right now?

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

Will pollen levels change in Marysville tomorrow?

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

Is pollen expected to decrease in Marysville this week?

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

Which pollen types are currently active in Marysville?

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

When is pollen season in Marysville?
Marysville's pollen season in California opens with oak and walnut from late January in the mild Sacramento Valley climate. Ash follows through February and March, with grass peaking strongly through April and May. The flat, open valley landscape allows substantial farmland grass and crop pollen to accumulate, while the Yuba and Feather River corridors contribute additional tree pollen under prevailing valley winds during spring.
How often is the Marysville pollen forecast updated?

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

Does pollen in Marysville 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 Marysville 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 Marysville, 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 Marysville.

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.