Cilfynydd pollen forecast - today, tomorrow and the week ahead

Today (9 August) pollen in Cilfynydd is medium; mugwort is medium; cypress and grass are low. Tomorrow (10 August 2026) levels are similar - mugwort remains medium. Over the following five days cypress, 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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Hay fever sufferers here typically notice symptoms peaking in late spring, then again during the summer grass season. That's on top of oak and ash, which are the main local tree pollen sources around Cilfynydd's parks and quieter streets. Surrounding Rhondda Cynon Taf farmland contributes substantial grass and tree pollen, moving into town when winds blow from the south-west.

Today - 9 August

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    Low

    10/100

  • Grass (Poaceae):

    Low

    10/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Medium

    49/100

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

    36/100

Air quality in Cilfynydd

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Frequently Asked Questions

Is pollen high in Cilfynydd right now?

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

Will pollen levels change in Cilfynydd tomorrow?

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

Is pollen expected to decrease in Cilfynydd 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 Cilfynydd?

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

When is pollen season in Cilfynydd?
Cilfynydd's pollen year has two main tree culprits: oak first, ash close behind. Expect oak pollen roughly from April to May, and ash keeps things going from March right through to May. Don't forget grass, either — it runs May to September and usually causes the most trouble in June and July. Good to know if you're planning anything outdoors that time of year.
How often is the Cilfynydd pollen forecast updated?

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

Does pollen in Cilfynydd 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 Cilfynydd 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 Cilfynydd, 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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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 Cilfynydd.

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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.