Ukiah pollen forecast - today, tomorrow and the week ahead

Today (9 August) pollen in Ukiah is medium; ragweed is medium; mugwort is low. Tomorrow (10 August 2026) levels are similar - mugwort remains low, ragweed remains medium, grass at low levels. 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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Set on the Russian River valley in Mendocino County wine country, Ukiah's landscape is defined by vineyard rows alongside coast live oak and Douglas fir on the hillsides, the main contributors to seasonal pollen exposure. None of this is unusual for a town with Ukiah's particular mix of terrain and plant life. None of this differs sharply from one year to the next barring unusual weather.

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):

    None

    0/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Low

    10/100

  • Ragweed (Ambrosia):

    Medium

    27/100

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

    3/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Low

    16/100

  • Ragweed (Ambrosia):

    Medium

    32/100

Air quality in Ukiah

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Frequently Asked Questions

Is pollen high in Ukiah right now?

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

Will pollen levels change in Ukiah tomorrow?

On 10 August 2026, pollen conditions in Ukiah will be different from today, with grass at low levels, ambrosia at medium levels, artemisia at low levels

Is pollen expected to decrease in Ukiah 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 Ukiah?

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

When is pollen season in Ukiah?
Pollen season in Ukiah starts with olive and acacia in January before eucalyptus extends the tree season through February. A grass pollen peak follows through March and April; sagebrush and mugwort extend exposure into early autumn. Onshore Pacific breezes periodically clear the air, though inland valleys can still see elevated counts, a defining feature of the local season.
How often is the Ukiah pollen forecast updated?

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

Does pollen in Ukiah 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 Ukiah 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 Ukiah, 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.

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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 Ukiah.

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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.