Llandeilo pollen forecast - today, tomorrow and the week ahead

Today (30 August) pollen in Llandeilo is high; mugwort is high. Tomorrow (31 August 2026) levels are similar. Over the following five days mugwort will increase. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.

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In Llandeilo, alder and oak dominate the local tree pollen picture, with parks and tree-lined residential streets offering more exposure than the compact centre. The patchwork of fields nearby is a notable secondary source, feeding pollen into town whenever the wind shifts to the south-west. This mix of urban and rural influence gives Llandeilo a fairly typical pollen pattern for the wider region.

Today - 30 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):

    High

    63/100

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 - 31 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):

    High

    58/100

Air quality in Llandeilo

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Frequently Asked Questions

Is pollen high in Llandeilo right now?

On 30 August 2026, overall pollen levels in Llandeilo are high. Artemisia is the main contributor to airborne pollen

Will pollen levels change in Llandeilo tomorrow?

On 31 August 2026, pollen conditions in Llandeilo will be similar to today, with artemisia at high levels

Is pollen expected to decrease in Llandeilo this week?

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

Which pollen types are currently active in Llandeilo?

On 30 August 2026, Artemisia is the dominant pollen source in Llandeilo. hazel, cypress, grass, and willow are not currently active.

When is pollen season in Llandeilo?
Llandeilo's pollen year has two main tree culprits: birch first, oak close behind. Birch tends to release pollen between March and May, while oak follows on from April to May. Don't forget grass, either — it runs May to September and usually causes the most trouble in June and July. Handy to bear in mind before booking that garden party.
How often is the Llandeilo pollen forecast updated?

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

Does pollen in Llandeilo 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 Llandeilo 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 Llandeilo, 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?

Birmingham Bristol Glasgow Leeds Liverpool London Manchester Portsmouth Sheffield Southampton

Check pollen in other popular cities:

Melton Rio de Janeiro Copenhagen Athens Denpasar Rome Cape Town Barcelona London Los Angeles New York

Data provided by Airmine — Last update: 30 August 2026 at 14:32 CEST (Data is updated four times daily.)

This page provides the latest public pollen forecast for Llandeilo.

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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.

Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.