Royal Wootton Bassett pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Royal Wootton Bassett is moderate; mugwort is moderate.
Pollen Tomorrow
Tomorrow (21 September 2026) levels are similar to today.
7-Day Trend
Over the next week mugwort will decrease; cypress, grass, 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 | 31/100 |
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) | None | 0/100 | |
| Willow (Salicaceae) | None | 0/100 | |
| Mugwort (Artemisia) | Moderate | 44/100 |
Local Environmental Conditions
Tree pollen in Royal Wootton Bassett comes mostly from oak and beech, with parks and mature gardens standing in contrast to the more built-up centre. The wider Wiltshire countryside supplies additional tree and grass pollen, particularly when shifting coastal winds carry it toward the built-up area. Overall exposure follows the broader regional trend, moderated somewhat by the town's parks and gardens.
In Royal Wootton Bassett, the pollen calendar starts with oak and rolls straight into beech. You'll usually see oak pollen from around April through May, with beech picking up between April and May. On top of that, grass pollen runs May to September and tends to hit hardest in June and July. Not a bad idea to stock up on antihistamines before it all kicks off.
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Frequently Asked Questions About Pollen in Wiltshire
Is pollen high in Royal Wootton Bassett right now?
On 20 September 2026, overall pollen levels in Royal Wootton Bassett are moderate. Artemisia is the main contributor to airborne pollen
Will pollen levels change in Royal Wootton Bassett tomorrow?
On 21 September 2026, pollen conditions in Royal Wootton Bassett will be similar to today, with artemisia at moderate levels
Is pollen expected to decrease in Royal Wootton Bassett this week?
According to the five-day outlook, artemisia pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.
Which pollen types are currently active in Royal Wootton Bassett?
On 20 September 2026, Artemisia is the dominant pollen source in Royal Wootton Bassett. cypress, grass, and willow are not currently active.
When is pollen season in Royal Wootton Bassett?
How often is the Royal Wootton Bassett pollen forecast updated?
The Royal Wootton Bassett pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Royal Wootton Bassett 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 Royal Wootton Bassett 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 Royal Wootton Bassett, 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).
