Barri pollen forecast - today, tomorrow and the week ahead

Today (25 June) pollen in Barri is medium; grass is medium; cypress is low. Tomorrow (26 June 2026) levels are similar - grass declining. 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

Barri's coastal parks and the Vale of Glamorgan countryside feature oak and ash as the main tree pollen sources, with exposure varying between these green areas and the more built-up town centre. Surrounding Vale of Glamorgan farmland and the Bristol Channel coastal position contribute substantial grass and tree pollen, while onshore southwesterly winds can periodically disperse pollen and Atlantic rainfall provides regular interruptions throughout the season.

Today - 25 June

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    Low

    14/100

  • Grass (Poaceae):

    Medium

    45/100

  • Willow (Salicaceae):

    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 - 26 June

  • 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

Frequently Asked Questions

Is pollen high in Barri right now?

On 25 June 2026, overall pollen levels in Barri are moderate. Grass is the main contributor to airborne pollen, while cypress remain at lower levels

Will pollen levels change in Barri tomorrow?

On 26 June 2026, pollen conditions in Barri will be different from today, with grass continuing to decline

Is pollen expected to decrease in Barri this week?

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

Which pollen types are currently active in Barri?

On 25 June 2026, Grass is the dominant pollen source in Barri. cypress are also present but at lower levels. alder, birch, hazel, and willow are not currently active.

When is pollen season in Barri?
Barri's pollen season opens with hazel and alder from late January, earlier than in some UK cities due to the mild Vale of Glamorgan coastal climate. Oak and ash follow through April and May, with grass peaking through June and July. Atlantic weather systems bring frequent rainfall providing regular interruptions, while surrounding Vale of Glamorgan farmland and the Bristol Channel coastal position influence seasonal timing and exposure.
How often is the Barri pollen forecast updated?

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

Does pollen in Barri 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 Barri 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 Barri, 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:

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

Data provided by Airmine — Last update: 25 Jun 2026, 09:00 CET (Data is updated four times daily.)

This page provides the latest public pollen forecast for Barri.

For long term forecasts and maps, see the Airmine app

Download on the App Store Get it on Google Play

Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team

Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.