Vlissingen pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Vlissingen is moderate; mugwort is moderate.
Pollen Tomorrow
Tomorrow (21 September 2026) mugwort declining.
7-Day Trend
Over the next week grass and mugwort will increase; cypress and willow will remain stable.
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Pollen Risk
Today - 20 September
| Pollen species | Level | Value |
|---|---|---|
| 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) | Moderate | 27/100 |
Tomorrow - 21 September
| Pollen species | Level | Value | 7-Day Trend |
|---|---|---|---|
| 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 | 25/100 |
Local Environmental Conditions
Around Vlissingen, oak, birch, and linden are the leading tree pollen contributors in parks and residential streets, with the leafier outskirts typically seeing higher counts than the compact centre. the Westerschelde estuary mouth, alongside the Zeeland farmland around Vlissingen, brings extra grass and tree pollen into an area known as an estuary-mouth port city.
Vlissingen sees its first pollen of the year from hazel and alder in January, with birch taking the lead through April and the season extending to August. April and May bring oak and ash into the mix, before grass becomes the main source through the following two months. Local dispersal is influenced by the Westerschelde estuary mouth, and the deep-sea shipping and port industry is characteristic of Vlissingen and its surroundings.
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Frequently Asked Questions About Pollen in Zeeland
Is pollen high in Vlissingen right now?
On 20 September 2026, overall pollen levels in Vlissingen are moderate. Artemisia is the main contributor to airborne pollen
Will pollen levels change in Vlissingen tomorrow?
On 21 September 2026, pollen conditions in Vlissingen will be different from today, with artemisia continuing to decline
Is pollen expected to decrease in Vlissingen 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 Vlissingen?
On 20 September 2026, Artemisia is the dominant pollen source in Vlissingen. cypress, grass, and willow are not currently active.
When is pollen season in Vlissingen?
How often is the Vlissingen pollen forecast updated?
The Vlissingen pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Vlissingen 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 Vlissingen 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 Vlissingen, 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.
Understanding the Scale
The 0–100 scores represent risk levels, not direct measurements of pollen or air pollutant concentrations. Higher scores indicate higher risk. Pollen and air quality use different thresholds.
Pollen
| None | 0 | No or negligible risk of exposure. Pollen/mold exposure is expected to be minimal. |
| Low | 0-25 | Low risk of exposure. Small amounts of pollen or mold spores may be present. |
| Moderate | 25-50 | Moderate risk of exposure. Pollen/mold exposure is expected to be noticeable. |
| High | 50-75 | High risk of exposure. Elevated pollen/mold exposure is expected. |
| Very High | 75-100 | Very high risk of exposure. Pollen/mold exposure is expected to be at or near its highest levels. |
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Get 15-day pollen forecasts with morning, afternoon and evening detail, plus 5-day air quality forecasts. Explore interactive pollen risk maps, estimated pollen season start, route profiles and a symptoms diary.
Features and forecast availability vary by region. Currently covering Europe, the contiguous US, southern Canada, South Africa, Australia, Indonesia (Java & Bali), Brazil, Paraguay, Uruguay and the Buenos Aires area.
Developed with support from the European Space Agency (ESA) Business Applications and Space Solutions (BASS).
