Gowerton pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Gowerton is moderate; mugwort is moderate.
Pollen Tomorrow
Tomorrow (21 September 2026) mugwort remains moderate, grass at low levels.
7-Day Trend
Over the next week grass will increase; mugwort will decrease; cypress and willow will remain stable.
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Pollen Risk
Today - 20 September
| Pollen species | Level | Value |
|---|---|---|
| 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) | Moderate | 29/100 |
Tomorrow - 21 September
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| Alder (Alnus) | None | 0/100 | — |
| Birch (Betula) | None | 0/100 | — |
| Hazel (Corylus) | None | 0/100 | — |
| Cypress (Cupressaceae) | None | 0/100 | |
| Grass (Poaceae) | Low | 4/100 | |
| Willow (Salicaceae) | None | 0/100 | |
| Mugwort (Artemisia) | Moderate | 50/100 |
Local Environmental Conditions
Residents in Gowerton dealing with hay fever usually point to oak and ash as the culprits, particularly in spring near parks and gardens. The nearby ring of orchards adds further grass and tree pollen exposure, particularly under northwesterly winds off the coast. Locals with allergies tend to plan around two peaks a year rather than one long stretch.
Ask anyone with allergies in Gowerton and they'll tell you it's oak and ash that cause the trouble. Oak tends to release pollen between April and May, before ash takes over, usually March to May. Then grass pollen takes the baton from May all the way to September, usually peaking in June and July — that's when most people really feel it. Something to plan around if pollen usually gets to you.
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Frequently Asked Questions About Pollen in Swansea
Is pollen high in Gowerton right now?
On 20 September 2026, overall pollen levels in Gowerton are moderate. Artemisia is the main contributor to airborne pollen
Will pollen levels change in Gowerton tomorrow?
On 21 September 2026, pollen conditions in Gowerton will be different from today, with artemisia at moderate levels, grass at low levels
Is pollen expected to decrease in Gowerton this week?
According to the five-day outlook, artemisia 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 Gowerton?
On 20 September 2026, Artemisia is the dominant pollen source in Gowerton. cypress, grass, and willow are not currently active.
When is pollen season in Gowerton?
How often is the Gowerton pollen forecast updated?
The Gowerton pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Gowerton 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 Gowerton 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 Gowerton, 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.
Understanding the Scale
The 0–100 scores represent risk levels, not direct measurements of pollen or air pollutant concentrations. Higher scores indicate higher risk. Pollen and air quality use different thresholds.
Pollen
| None | 0 | No or negligible risk of exposure. Pollen/mold exposure is expected to be minimal. |
| Low | 0-25 | Low risk of exposure. Small amounts of pollen or mold spores may be present. |
| Moderate | 25-50 | Moderate risk of exposure. Pollen/mold exposure is expected to be noticeable. |
| High | 50-75 | High risk of exposure. Elevated pollen/mold exposure is expected. |
| Very High | 75-100 | Very high risk of exposure. Pollen/mold exposure is expected to be at or near its highest levels. |
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Get 15-day pollen forecasts with morning, afternoon and evening detail, plus 5-day air quality forecasts. Explore interactive pollen risk maps, estimated pollen season start, route profiles and a symptoms diary.
Features and forecast availability vary by region. Currently covering Europe, the contiguous US, southern Canada, South Africa, Australia, Indonesia (Java & Bali), Brazil, Paraguay, Uruguay and the Buenos Aires area.
Developed with support from the European Space Agency (ESA) Business Applications and Space Solutions (BASS).
