Alamosa pollen forecast - today, tomorrow and the week ahead

Today (9 August) pollen in Alamosa is medium; mugwort and ragweed are medium; grass is low. Tomorrow (10 August 2026) levels are similar - ragweed remains medium, mugwort declining. 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

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Alamosa's setting on the high San Luis Valley beneath the Sangre de Cristo Mountains supports sagebrush flats, cottonwood along the Rio Grande, and high desert grassland as the leading local vegetation, all factoring into the pollen count through the year. Wind patterns across the area help determine how far pollen travels from these source plants. 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):

    Low

    10/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Medium

    28/100

  • Ragweed (Ambrosia):

    Medium

    48/100

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

    17/100

  • Ragweed (Ambrosia):

    Medium

    38/100

Air quality in Alamosa

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Frequently Asked Questions

Is pollen high in Alamosa right now?

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

Will pollen levels change in Alamosa tomorrow?

On 10 August 2026, pollen conditions in Alamosa will be different from today, with ambrosia at medium levels and artemisia continuing to decline

Is pollen expected to decrease in Alamosa this week?

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

Which pollen types are currently active in Alamosa?

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

When is pollen season in Alamosa?
Pollen season in Alamosa starts with juniper and cottonwood in March before ash extends the tree season through April. Grass pollen builds through May and June, and grass pollen lingers into early September before tapering off. The semi-arid high-elevation climate means fewer rainfall interruptions than in wetter US regions, shaping conditions across the city.
How often is the Alamosa pollen forecast updated?

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

Does pollen in Alamosa 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 Alamosa 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 Alamosa, 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 Alamosa.

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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.