Llanelli pollen forecast - today, tomorrow and the week ahead

Today (9 August) pollen in Llanelli is medium; mugwort is medium; grass is low. Tomorrow (10 August 2026) levels are similar - mugwort remains medium. Over the following five days grass and mugwort will increase. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.

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Llanelli's parks and green spaces feature oak and ash as the main tree pollen sources, with exposure varying between these greener areas and the more built-up town centre. Surrounding Carmarthenshire farmland contributes substantial grass and tree pollen, moving into town when winds blow from the north. This combination means residents feel both urban and rural pollen sources depending on which way the wind's blowing.

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

    9/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Medium

    41/100

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):

    Medium

    30/100

Air quality in Llanelli

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Frequently Asked Questions

Is pollen high in Llanelli right now?

On 9 August 2026, overall pollen levels in Llanelli are moderate. Artemisia is the main contributor to airborne pollen, while grass remain at lower levels

Will pollen levels change in Llanelli tomorrow?

On 10 August 2026, pollen conditions in Llanelli will be different from today, with artemisia at medium levels

Is pollen expected to decrease in Llanelli this week?

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

Which pollen types are currently active in Llanelli?

On 9 August 2026, Artemisia is the dominant pollen source in Llanelli. grass are also present but at lower levels. willow, hazel, and cypress are not currently active.

When is pollen season in Llanelli?
Want to know what triggers spring allergies in Llanelli? Start with oak, then ash. You'll usually see oak pollen from around April through May, and ash keeps things going from March right through to May. After that, grass pollen carries the season from May through to September, with June and July normally the toughest stretch. Worth keeping an eye on the forecast if you're sensitive.
How often is the Llanelli pollen forecast updated?

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

Does pollen in Llanelli 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 Llanelli 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 Llanelli, 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 Kingdom?

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Check pollen in other popular cities:

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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 Llanelli.

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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.