Llanelli pollen forecast - today, tomorrow and the week ahead

Today (16 July) pollen in Llanelli is low; grass is low. Tomorrow (17 July 2026) levels are similar - grass remains low, cypress at low levels. Over the following five days cypress and grass will increase. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.

For long term forecasts and maps, see the Airmine app

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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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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 - 16 July

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    Low

    13/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    None

    0/100

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 - 17 July

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    Low

    1/100

  • Grass (Poaceae):

    Low

    16/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    None

    0/100

Air quality in Llanelli

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Frequently Asked Questions

Is pollen high in Llanelli right now?

On 16 July 2026, overall pollen levels in Llanelli are low. Grass is the main contributor to airborne pollen

Will pollen levels change in Llanelli tomorrow?

On 17 July 2026, pollen conditions in Llanelli will be different from today, with cypress at low levels, grass at low levels

Is pollen expected to decrease in Llanelli this week?

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

Which pollen types are currently active in Llanelli?

On 16 July 2026, Grass is the dominant pollen source in Llanelli. artemisia, birch, hazel, cypress, willow, and alder 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: 16 July 2026 at 05:36 CEST (Data is updated four times daily.)

This page provides the latest public pollen forecast for Llanelli.

For long term forecasts and maps, see the Airmine app

Download on the App Store Get it on Google Play

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