Ostend pollen forecast - today, tomorrow and the week ahead
Today (9 August) pollen in Ostend is high; mugwort is high; grass is low. Tomorrow (10 August 2026) levels are similar - mugwort declining. 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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Ostend's coastal parks and the North Sea waterfront oak and birch are the dominant tree species for pollen here, and grass from the neighbouring Flanders countryside keeps counts elevated into early summer. Local wind patterns help clear the air on breezier days.
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):
Medium
49/100
Air quality in Ostend
View air qualityFrequently Asked Questions
Is pollen high in Ostend right now?
On 9 August 2026, overall pollen levels in Ostend are high. Artemisia is the main contributor to airborne pollen, while grass remain at lower levels
Will pollen levels change in Ostend tomorrow?
On 10 August 2026, pollen conditions in Ostend will be different from today, with artemisia continuing to decline
Is pollen expected to decrease in Ostend this week?
According to the five-day outlook, artemisia and grass pollen levels will increase later in the week.
Which pollen types are currently active in Ostend?
On 9 August 2026, Artemisia is the dominant pollen source in Ostend. grass are also present but at lower levels. hazel, cypress, and willow are not currently active.
When is pollen season in Ostend?
How often is the Ostend pollen forecast updated?
The Ostend pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Ostend 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 Ostend 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 Ostend, 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 Belgium?
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 Ostend.
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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.