Chepstow pollen forecast - today, tomorrow and the week ahead

Today (16 July) pollen in Chepstow 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.

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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Around Chepstow, birch and oak are the dominant species behind local tree pollen, with counts higher near parks than in the centre. The nearby surrounding hills adds further grass and tree pollen exposure, particularly under light prevailing breezes. Locals with allergies tend to plan around two peaks a year rather than one long stretch.

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

    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

    6/100

  • Grass (Poaceae):

    Low

    23/100

  • Willow (Salicaceae):

    None

    0/100

  • Mugwort (Artemisia):

    Low

    5/100

Air quality in Chepstow

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Frequently Asked Questions

Is pollen high in Chepstow right now?

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

Will pollen levels change in Chepstow tomorrow?

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

Is pollen expected to decrease in Chepstow 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 Chepstow?

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

When is pollen season in Chepstow?
Pollen season in Chepstow really gets going with birch, followed not long after by oak. You'll usually see birch pollen from around March through May, with oak picking up between April and May. Grass season overlaps a lot of this too, running May through September and peaking mid-summer. Something to plan around if pollen usually gets to you.
How often is the Chepstow pollen forecast updated?

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

Does pollen in Chepstow 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 Chepstow 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 Chepstow, 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 05:36 CEST (Data is updated four times daily.)

This page provides the latest public pollen forecast for Chepstow.

For long term forecasts and maps, see the Airmine app

Download on the App Store Get it on Google Play

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