Castricum pollen forecast - today, tomorrow and the week ahead
Today (9 August) pollen in Castricum is high; mugwort is high; grass is low. Tomorrow (10 August 2026) levels are similar - mugwort remains high. 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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Local tree pollen in Castricum traces mainly to oak, birch, and linden in parks and gardens, and levels shift depending on how close residents are to parks versus the built-up core. Given Castricum's standing as a wooded dune village, the coastal dune reserve and nearby Noord-Holland farmland add noticeably to grass and tree pollen levels.
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):
Low
21/100
-
Willow (Salicaceae):
None
0/100
-
Mugwort (Artemisia):
High
70/100
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):
High
55/100
Air quality in Castricum
View air qualityFrequently Asked Questions
Is pollen high in Castricum right now?
On 9 August 2026, overall pollen levels in Castricum are high. Artemisia is the main contributor to airborne pollen, while grass remain at lower levels
Will pollen levels change in Castricum tomorrow?
On 10 August 2026, pollen conditions in Castricum will be different from today, with artemisia at high levels
Is pollen expected to decrease in Castricum 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 Castricum?
On 9 August 2026, Artemisia is the dominant pollen source in Castricum. grass are also present but at lower levels. willow, hazel, and cypress are not currently active.
When is pollen season in Castricum?
How often is the Castricum pollen forecast updated?
The Castricum pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Castricum 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 Castricum 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 Castricum, 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 Netherlands?
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 Castricum.
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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.