Dolgellau pollen forecast - today, tomorrow and the week ahead

Today (16 July) pollen in Dolgellau is low; cypress and grass are low. Tomorrow (17 July 2026) levels are similar. 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

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Dolgellau's parks and green spaces feature alder and oak as the main tree pollen sources, with exposure varying between these greener areas and the more built-up town centre. The wider Gwynedd countryside supplies additional tree and grass pollen, particularly when easterly winds carry it toward the built-up area. It's a pattern shared by plenty of similarly sized towns nearby, shaped more by geography than anything unusual locally.

Today - 16 July

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    Low

    9/100

  • Grass (Poaceae):

    Low

    18/100

  • 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

    14/100

  • Grass (Poaceae):

    Low

    21/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    None

    0/100

Air quality in Dolgellau

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Frequently Asked Questions

Is pollen high in Dolgellau right now?

On 16 July 2026, overall pollen levels in Dolgellau are low. Cypress is the main contributor to airborne pollen, while grass remain at lower levels

Will pollen levels change in Dolgellau tomorrow?

On 17 July 2026, pollen conditions in Dolgellau will be similar to today, with cypress at low levels, grass at low levels

Is pollen expected to decrease in Dolgellau this week?

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

Which pollen types are currently active in Dolgellau?

On 16 July 2026, Cypress is the dominant pollen source in Dolgellau. grass are also present but at lower levels. hazel, willow, alder, artemisia, and birch are not currently active.

When is pollen season in Dolgellau?
The tree pollen story in Dolgellau is really about birch and oak, in that order. You'll usually see birch pollen from around March through May, while oak follows on from April 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. Not a bad idea to stock up on antihistamines before it all kicks off.
How often is the Dolgellau pollen forecast updated?

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

Does pollen in Dolgellau 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 Dolgellau 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 Dolgellau, 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:

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

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 Dolgellau.

For long term forecasts and maps, see the Airmine app

Download on the App Store Get it on Google Play

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