Petaluma pollen forecast — Downtown Petaluma neighborhood

Today (9 August) pollen in Downtown Petaluma, Petaluma is medium; mugwort and ragweed are medium; cypress and grass are low. Tomorrow (10 August 2026) levels are similar - mugwort declining, ragweed declining. Over the following five days grass, mugwort, and ragweed will increase; cypress will remain stable. 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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Downtown Petaluma, the city's historic riverfront downtown, shares its vegetation profile with the broader Petaluma area, so pollen exposure here tracks the same regional sources found across the city. Exposure here depends mainly on how much tree and lawn cover surrounds the immediate site.

Today - 9 August

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    Low

    8/100

  • Grass (Poaceae):

    Low

    10/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Medium

    36/100

  • Ragweed (Ambrosia):

    Medium

    38/100

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):

    None

    0/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Low

    11/100

  • Ragweed (Ambrosia):

    Low

    15/100

Other Landmarks in Petaluma

Frequently Asked Questions

Is pollen high in Petaluma right now?

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

Will pollen levels change in Petaluma tomorrow?

On 10 August 2026, pollen conditions in Petaluma will be different from today, with ambrosia, artemisia continuing to decline

Is pollen expected to decrease in Petaluma 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 Petaluma?

On 9 August 2026, Ambrosia is the dominant pollen source in Petaluma. artemisia, grass, and cypress are also present but at lower levels.

When is pollen season in Petaluma?
Situated a neighborhood in Petaluma, Downtown Petaluma shares the area's pollen timeline, beginning with olive and acacia in January with eucalyptus following close behind through February. Grass pollen then peaks through March and April, and mugwort extends exposure into September. The Southern California Mediterranean climate advances the season, and onshore Pacific breezes can periodically disperse pollen throughout the year.
How often is the Petaluma pollen forecast updated?

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

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

This page provides the latest public pollen forecast for Downtown Petaluma, Petaluma.

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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.