Halstead pollen forecast - today, tomorrow and the week ahead

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

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Halstead sees oak and birch as the leading tree pollen contributors, with levels differing noticeably between well-vegetated suburbs and the denser core. Surrounding Essex farmland contributes substantial grass and tree pollen, moving into town when winds blow from the west. 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):

    Low

    23/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    High

    70/100

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

    32/100

Air quality in Halstead

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Frequently Asked Questions

Is pollen high in Halstead right now?

On 9 August 2026, overall pollen levels in Halstead are high. Artemisia is the main contributor to airborne pollen, while grass remain at lower levels

Will pollen levels change in Halstead tomorrow?

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

Is pollen expected to decrease in Halstead this week?

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

Which pollen types are currently active in Halstead?

On 9 August 2026, Artemisia is the dominant pollen source in Halstead. grass are also present but at lower levels. cypress, willow, and hazel are not currently active.

When is pollen season in Halstead?
If you're wondering when hay fever kicks off in Halstead, it's mostly down to oak and birch. Grass season overlaps a lot of this too, running May through September and peaking mid-summer. Oak gets going around April and tapers off by May, then birch carries on from March until May. Not a bad idea to stock up on antihistamines before it all kicks off.
How often is the Halstead pollen forecast updated?

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

Does pollen in Halstead 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 Halstead 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 Halstead, 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: 9 August 2026 at 20:27 CEST (Data is updated four times daily.)

This page provides the latest public pollen forecast for Halstead.

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

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.