Trecynon pollen forecast - today, tomorrow and the week ahead

Today (9 August) pollen in Trecynon 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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It's a pattern shared by plenty of similarly sized towns nearby, shaped more by geography than anything unusual locally. That's on top of ash and hazel, which are the main local tree pollen sources around Trecynon's parks and quieter streets. Grass pollen from surrounding Rhondda Cynon Taf fields is significant through the summer months, carried in by easterly winds.

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

    45/100

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

    31/100

Air quality in Trecynon

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Frequently Asked Questions

Is pollen high in Trecynon right now?

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

Will pollen levels change in Trecynon tomorrow?

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

Is pollen expected to decrease in Trecynon this week?

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

Which pollen types are currently active in Trecynon?

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

When is pollen season in Trecynon?
For Trecynon, the season kicks off with ash and then hands things over to hazel. Grass season overlaps a lot of this too, running May through September and peaking mid-summer. You'll usually see ash pollen from around March through May, while hazel follows on from January to April. Good to know if you're planning anything outdoors that time of year.
How often is the Trecynon pollen forecast updated?

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

Does pollen in Trecynon 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 Trecynon 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 Trecynon, 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?

Check pollen in other popular cities:

Data provided by Airmine — Last update: 9 August 2026 at 20:27 CEST (Data is updated four times daily.)

This page provides the latest public pollen forecast for Trecynon.

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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.