Barstow pollen forecast - today, tomorrow and the week ahead

Today (9 August) pollen in Barstow is low; grass, mugwort, and ragweed are low. Tomorrow (10 August 2026) levels are similar - ragweed remains low. 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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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team

Follow your pollen exposure and performance with the free Airmine–Strava integration. See your pollen and air quality exposure for every Strava activity.

Barstow's setting on the Mojave Desert crossroads supports creosote bush, desert saltbush, and Joshua tree at higher edges as the leading local vegetation, all factoring into the pollen count through the year. Seasonal timing here follows the broader regional pattern typical of this part of the country. Small local variations aside, this pattern holds fairly steady from year to year.

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):

    Low

    3/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Low

    2/100

  • Ragweed (Ambrosia):

    Low

    20/100

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):

    None

    0/100

  • Ragweed (Ambrosia):

    Low

    17/100

Air quality in Barstow

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Frequently Asked Questions

Is pollen high in Barstow right now?

On 9 August 2026, overall pollen levels in Barstow are low. Grass is the main contributor to airborne pollen, while ambrosia and artemisia remain at lower levels

Will pollen levels change in Barstow tomorrow?

On 10 August 2026, pollen conditions in Barstow will be different from today, with ambrosia at low levels

Is pollen expected to decrease in Barstow 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 Barstow?

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

When is pollen season in Barstow?
In Barstow, pollen season begins with olive and acacia starting in January with eucalyptus following close behind through February. Grass pollen then peaks through March and April, and sagebrush and mugwort extend exposure into early autumn. The Southern California Mediterranean climate advances the season, and onshore Pacific breezes can periodically disperse pollen, a defining feature of the local season.
How often is the Barstow pollen forecast updated?

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

Does pollen in Barstow 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 Barstow 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 Barstow, 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: 9 August 2026 at 20:27 CEST (Data is updated four times daily.)

This page provides the latest public pollen forecast for Barstow.

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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.