Blaenau Ffestiniog pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Blaenau Ffestiniog is none
Pollen Tomorrow
Tomorrow (21 September 2026) grass at low levels, mugwort at moderate levels.
7-Day Trend
Over the next week grass and mugwort will decrease; cypress and willow will remain stable.
Explore Forecasts
Air Quality
Pollen in Other Cities
Air Quality in Other Cities
Get More in Our App
Local pollen and air quality forecasts, interactive pollen maps and route profiles
Features and forecast availability vary by region.
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) | None | 0/100 |
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 | 14/100 | |
| Willow (Salicaceae) | None | 0/100 | |
| Mugwort (Artemisia) | Moderate | 34/100 |
Local Environmental Conditions
Blaenau Ffestiniog sees oak and ash as the leading tree pollen contributors, with levels differing noticeably between well-vegetated suburbs and the denser core. The wider Gwynedd countryside supplies additional tree and grass pollen, particularly when moist Atlantic fronts carry it toward the built-up area. This mix of urban and rural influence gives Blaenau Ffestiniog a fairly typical pollen pattern for the wider region.
Blaenau Ffestiniog's pollen year has two main tree culprits: oak first, ash close behind. After that, grass pollen carries the season from May through to September, with June and July normally the toughest stretch. Oak gets going around April and tapers off by May, then ash carries on from March until May. Handy to bear in mind before booking that garden party.
Get pollen & AQ on Strava
Follow your environmental exposure and performance with the free Airmine-Strava integration. See your pollen and air quality exposure for every Strava activity.
Resource Hub
Frequently Asked Questions About Pollen in Gwynedd
Is pollen high in Blaenau Ffestiniog right now?
Currently, there is no significant pollen in Blaenau Ffestiniog.
Will pollen levels change in Blaenau Ffestiniog tomorrow?
On 21 September 2026, pollen conditions in Blaenau Ffestiniog will be different from today, with artemisia at moderate levels, grass at low levels
Is pollen expected to decrease in Blaenau Ffestiniog this week?
According to the five-day outlook, artemisia and grass pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.
Which pollen types are currently active in Blaenau Ffestiniog?
On 20 September 2026, there are no significant pollen types in Blaenau Ffestiniog.
When is pollen season in Blaenau Ffestiniog?
How often is the Blaenau Ffestiniog pollen forecast updated?
The Blaenau Ffestiniog pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Blaenau Ffestiniog 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 Blaenau Ffestiniog 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 Blaenau Ffestiniog, 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. |
Get More in the Airmine Pollen app
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).
