Saint Helens pollen forecast - today, tomorrow and the week ahead

Today (25 June) pollen in Saint Helens is high; grass is high; cypress is medium. Tomorrow (26 June 2026) levels are similar - cypress declining, grass declining. Over the following five days grass will increase; cypress will decrease. 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

St Helens' parks, including Victoria Park, feature oak and birch as the main tree pollen sources, with exposure varying between these green areas and the more built-up town centre. Surrounding Merseyside and Lancashire farmland contribute additional grass and tree pollen, while the flat lowland landscape allows pollen to disperse readily across the area under prevailing southwesterly winds.

Today - 25 June

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    Medium

    29/100

  • Grass (Poaceae):

    High

    68/100

  • 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):

    Low

    7/100

  • Grass (Poaceae):

    Medium

    47/100

  • Willow (Salicaceae):

    None

    0/100

Frequently Asked Questions

Is pollen high in Saint Helens right now?

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

Will pollen levels change in Saint Helens tomorrow?

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

Is pollen expected to decrease in Saint Helens this week?

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

Which pollen types are currently active in Saint Helens?

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

When is pollen season in Saint Helens?
St Helens' pollen season opens with hazel and alder from February, slightly later than southern UK cities due to the cooler, wetter northwest climate. Birch and oak follow through April and May, with grass pollen peaking through June and July. Surrounding Lancashire and Merseyside farmland contribute additional exposure, while frequent rainfall typical of the northwest provides regular interruptions to the season throughout summer.
How often is the Saint Helens pollen forecast updated?

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

Does pollen in Saint Helens 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 Saint Helens 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 Saint Helens, 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: 25 Jun 2026, 09:01 CET (Data is updated four times daily.)

This page provides the latest public pollen forecast for Saint Helens.

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.