Castro Urdiales pollen forecast - today, tomorrow and the week ahead
Today (9 August) pollen in Castro Urdiales is low; mugwort is low. Tomorrow (10 August 2026) levels are similar. Over the following five days 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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Castro Urdiales has plenty of grasses, unusually lush thanks to the rainfall and oak. The season peaks March for the earliest species, with grasses running through August. Coastal fog (locally called brétega in Galicia) often settles in the morning and dampens dispersal.
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
14/100
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):
None
0/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
Low
22/100
Air quality in Castro Urdiales
View air qualityFrequently Asked Questions
Is pollen high in Castro Urdiales right now?
On 9 August 2026, overall pollen levels in Castro Urdiales are low. Artemisia is the main contributor to airborne pollen
Will pollen levels change in Castro Urdiales tomorrow?
On 10 August 2026, pollen conditions in Castro Urdiales will be similar to today, with artemisia at low levels
Is pollen expected to decrease in Castro Urdiales 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 Castro Urdiales?
On 9 August 2026, Artemisia is the dominant pollen source in Castro Urdiales. hazel, cypress, grass, and willow are not currently active.
How often is the Castro Urdiales pollen forecast updated?
The Castro Urdiales pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Castro Urdiales 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 Castro Urdiales 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 Castro Urdiales, 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 Spain?
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 Castro Urdiales.
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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.