Castlederg pollen forecast - today, tomorrow and the week ahead

Today (9 August) pollen in Castlederg is medium; mugwort is medium. Tomorrow (10 August 2026) levels are similar - mugwort remains medium, cypress at low levels, grass at low levels. 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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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team

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In Castlederg, oak and ash dominate the local tree pollen picture, with parks and tree-lined residential streets offering more exposure than the compact centre. Local farmland and hedgerows nearby add meaningful grass pollen through late spring and summer, especially under the prevailing Atlantic airflow. 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):

    None

    0/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Medium

    33/100

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):

    Low

    2/100

  • Grass (Poaceae):

    Low

    3/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Medium

    43/100

Air quality in Castlederg

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Frequently Asked Questions

Is pollen high in Castlederg right now?

On 9 August 2026, overall pollen levels in Castlederg are moderate. Artemisia is the main contributor to airborne pollen

Will pollen levels change in Castlederg tomorrow?

On 10 August 2026, pollen conditions in Castlederg will be different from today, with artemisia at medium levels, cypress at low levels, grass at low levels

Is pollen expected to decrease in Castlederg 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 Castlederg?

On 9 August 2026, Artemisia is the dominant pollen source in Castlederg. hazel, cypress, grass, and willow are not currently active.

When is pollen season in Castlederg?
For Castlederg, the season kicks off with oak and then hands things over to ash. You'll usually see oak pollen from around April through May, with ash picking up between March and May. Grass then takes over from May right through September, peaking around June and July for most people. Good to know if you're planning anything outdoors that time of year.
How often is the Castlederg pollen forecast updated?

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

Does pollen in Castlederg 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 Castlederg 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 Castlederg, 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: 10 August 2026 at 02:34 CEST (Data is updated four times daily.)

This page provides the latest public pollen forecast for Castlederg.

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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.