Hay-on-Wye pollen forecast - today, tomorrow and the week ahead
Today (9 August) pollen in Hay-on-Wye is medium; mugwort is medium; cypress and grass are low. Tomorrow (10 August 2026) levels are similar - mugwort remains medium. Over the following five days cypress, 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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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Tree pollen in Hay-on-Wye comes mostly from oak and ash, with parks and mature gardens standing in contrast to the more built-up centre. Surrounding Powys farmland contributes substantial grass and tree pollen, moving into town when winds blow from the south. The relatively open, low-lying landscape lets pollen disperse readily across the area through the season.
Today - 9 August
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
Low
10/100
-
Grass (Poaceae):
Low
10/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
Medium
48/100
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
29/100
Air quality in Hay-on-Wye
View air qualityFrequently Asked Questions
Is pollen high in Hay-on-Wye right now?
On 9 August 2026, overall pollen levels in Hay-on-Wye are moderate. Artemisia is the main contributor to airborne pollen, while cypress and grass remain at lower levels
Will pollen levels change in Hay-on-Wye tomorrow?
On 10 August 2026, pollen conditions in Hay-on-Wye will be different from today, with artemisia at medium levels
Is pollen expected to decrease in Hay-on-Wye 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 Hay-on-Wye?
On 9 August 2026, Artemisia is the dominant pollen source in Hay-on-Wye. cypress and grass are also present but at lower levels. hazel and willow are not currently active.
When is pollen season in Hay-on-Wye?
How often is the Hay-on-Wye pollen forecast updated?
The Hay-on-Wye pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Hay-on-Wye 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 Hay-on-Wye 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 Hay-on-Wye, 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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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 Hay-on-Wye.
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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.