Heswall pollen forecast - today, tomorrow and the week ahead

Today (9 August) pollen in Heswall is high; mugwort is high. Tomorrow (10 August 2026) levels are similar - mugwort declining. Over the following five days mugwort will increase. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.

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In Heswall, birch and sycamore dominate the local tree pollen picture, with parks and tree-lined residential streets offering more exposure than the compact centre. The wider Wirral countryside supplies additional tree and grass pollen, particularly when the dominant maritime airflow carry it toward the built-up area. 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):

    High

    57/100

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

    50/100

Air quality in Heswall

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Frequently Asked Questions

Is pollen high in Heswall right now?

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

Will pollen levels change in Heswall tomorrow?

On 10 August 2026, pollen conditions in Heswall will be different from today, with artemisia continuing to decline

Is pollen expected to decrease in Heswall 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 Heswall?

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

When is pollen season in Heswall?
Ask anyone with allergies in Heswall and they'll tell you it's birch and sycamore that cause the trouble. Grass pollen then stretches from May into September, with the worst of it typically landing in June and July. Birch gets going around March and tapers off by May, with sycamore picking up between April and June. Good to know if you're planning anything outdoors that time of year.
How often is the Heswall pollen forecast updated?

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

Does pollen in Heswall 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 Heswall 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 Heswall, 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:

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

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 Heswall.

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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.