Porthcawl pollen forecast - today, tomorrow and the week ahead

Today (16 July) pollen in Porthcawl is low; grass is low. Tomorrow (17 July 2026) levels are similar - grass remains low, cypress at low levels, mugwort at low levels. Over the following five days cypress and mugwort will increase; grass will decrease. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.

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Porthcawl sees birch and oak as the leading tree pollen contributors, with levels differing noticeably between well-vegetated suburbs and the denser core. Grass pollen from surrounding Bridgend fields is significant through the summer months, carried in by the region's typical south-westerlies. The relatively open, low-lying landscape lets pollen disperse readily across the area through the season.

Today - 16 July

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    None

    0/100

  • Grass (Poaceae):

    Low

    6/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    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 - 17 July

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    Low

    1/100

  • Grass (Poaceae):

    Low

    7/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Low

    1/100

Air quality in Porthcawl

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Frequently Asked Questions

Is pollen high in Porthcawl right now?

On 16 July 2026, overall pollen levels in Porthcawl are low. Grass is the main contributor to airborne pollen

Will pollen levels change in Porthcawl tomorrow?

On 17 July 2026, pollen conditions in Porthcawl will be different from today, with artemisia at low levels, cypress at low levels, grass at low levels

Is pollen expected to decrease in Porthcawl this week?

According to the five-day outlook, grass pollen levels are expected to gradually decrease, while artemisia and cypress pollen will increase, suggesting mixed conditions later in the week.

Which pollen types are currently active in Porthcawl?

On 16 July 2026, Grass is the dominant pollen source in Porthcawl. artemisia, birch, hazel, cypress, willow, and alder are not currently active.

When is pollen season in Porthcawl?
The tree pollen story in Porthcawl is really about birch and oak, in that order. Birch tends to release pollen between March and May, and oak keeps things going from April right through to May. Then grass pollen takes the baton from May all the way to September, usually peaking in June and July — that's when most people really feel it. Handy to bear in mind before booking that garden party.
How often is the Porthcawl pollen forecast updated?

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

Does pollen in Porthcawl 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 Porthcawl 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 Porthcawl, 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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Check pollen in other popular cities:

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Data provided by Airmine — Last update: 16 July 2026 at 10:33 CEST (Data is updated four times daily.)

This page provides the latest public pollen forecast for Porthcawl.

For long term forecasts and maps, see the Airmine app

Download on the App Store Get it on Google Play

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