Nefyn pollen forecast - today, tomorrow and the week ahead
Today (30 August) pollen in Nefyn is high; mugwort is high; grass is low. Tomorrow (31 August 2026) levels are similar. Over the following five days 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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The relatively open, low-lying landscape lets pollen disperse readily across the area through the season. That's on top of oak and ash, which are the main local tree pollen sources around Nefyn's parks and quieter streets. Surrounding Gwynedd farmland contributes substantial grass and tree pollen, moving into town when winds blow from the the coast.
Today - 30 August
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
None
0/100
-
Grass (Poaceae):
Low
9/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
High
65/100
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 - 31 August
-
Alder (Alnus):
None
0/100
-
Birch (Betula):
None
0/100
-
Hazel (Corylus):
None
0/100
-
Cypress (Cupressaceae):
None
0/100
-
Grass (Poaceae):
Low
3/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
High
62/100
Air quality in Nefyn
View air qualityFrequently Asked Questions
Is pollen high in Nefyn right now?
On 30 August 2026, overall pollen levels in Nefyn are high. Artemisia is the main contributor to airborne pollen, while grass remain at lower levels
Will pollen levels change in Nefyn tomorrow?
On 31 August 2026, pollen conditions in Nefyn will be similar to today, with grass at low levels, artemisia at high levels
Is pollen expected to decrease in Nefyn this week?
According to the five-day outlook, grass and artemisia pollen levels will increase later in the week.
Which pollen types are currently active in Nefyn?
On 30 August 2026, Artemisia is the dominant pollen source in Nefyn. grass are also present but at lower levels. willow, hazel, and cypress are not currently active.
When is pollen season in Nefyn?
How often is the Nefyn pollen forecast updated?
The Nefyn pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Nefyn 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 Nefyn 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 Nefyn, 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?
Check pollen in other popular cities:
Data provided by Airmine — Last update: 30 August 2026 at 14:32 CEST (Data is updated four times daily.)
This page provides the latest public pollen forecast for Nefyn.
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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.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.