Derry pollen forecast - today, tomorrow and the week ahead
Today (9 August) pollen in Derry is low; mugwort is low. Tomorrow (10 August 2026) levels are similar - mugwort increasing, grass at low levels. 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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Tree pollen in Derry comes mostly from alder and birch, with parks and mature gardens standing in contrast to the more built-up centre. Grass pollen from surrounding Derry and Strabane fields is significant through the summer months, carried in by northwesterly winds off the coast. It's a pattern shared by plenty of similarly sized towns nearby, shaped more by geography than anything unusual locally.
Today - 9 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):
Low
24/100
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):
Low
1/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
Medium
32/100
Air quality in Derry
View air qualitySports venues in Derry
Frequently Asked Questions
Is pollen high in Derry right now?
On 9 August 2026, overall pollen levels in Derry are low. Artemisia is the main contributor to airborne pollen
Will pollen levels change in Derry tomorrow?
On 10 August 2026, pollen conditions in Derry will be different from today, with grass at low levels and artemisia increasing
Is pollen expected to decrease in Derry this week?
According to the five-day outlook, artemisia, cypress, and grass pollen levels will increase later in the week.
Which pollen types are currently active in Derry?
On 9 August 2026, Artemisia is the dominant pollen source in Derry. hazel, cypress, grass, and willow are not currently active.
When is pollen season in Derry?
How often is the Derry pollen forecast updated?
The Derry pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Derry 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 Derry 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 Derry, 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: 9 August 2026 at 20:27 CEST (Data is updated four times daily.)
This page provides the latest public pollen forecast for Derry.
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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.