Middelburg pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Middelburg is moderate; mugwort is moderate.
Pollen Tomorrow
Tomorrow (21 September 2026) levels are similar to today.
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 | 34/100 |
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) | Moderate | 31/100 |
Local Environmental Conditions
The tree cover in Middelburg leans heavily on oak, birch, and linden for pollen production, though levels vary noticeably between the dense centre and the leafier edges of town. As a historic Walcheren peninsula town, Middelburg also picks up grass and tree pollen from the Walcheren peninsula and Scheldt estuary and the surrounding Zeeland farmland.
The pollen calendar in Middelburg opens in January with hazel and alder, shifts to birch dominance through April, and continues to August. By April and May oak and ash are releasing pollen, and grass takes the peak position from June through July. The presence of the Walcheren peninsula and Scheldt estuary nearby affects how pollen moves through the air, and the historic capital of Zeeland province is a distinctive feature of the Middelburg area.
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Frequently Asked Questions About Pollen in Zeeland
Is pollen high in Middelburg right now?
On 20 September 2026, overall pollen levels in Middelburg are moderate. Artemisia is the main contributor to airborne pollen
Will pollen levels change in Middelburg tomorrow?
On 21 September 2026, pollen conditions in Middelburg will be similar to today, with artemisia at moderate levels
Is pollen expected to decrease in Middelburg 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 Middelburg?
On 20 September 2026, Artemisia is the dominant pollen source in Middelburg. cypress, grass, and willow are not currently active.
When is pollen season in Middelburg?
How often is the Middelburg pollen forecast updated?
The Middelburg pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Middelburg 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 Middelburg 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 Middelburg, 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).
