Raalte pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Raalte is none
Pollen Tomorrow
Tomorrow (21 September 2026) levels are similar to today.
7-Day Trend
Over the next week mugwort will increase; cypress, grass, and willow will remain stable.
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Features and forecast availability vary by region.
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) | None | 0/100 |
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) | None | 0/100 |
Local Environmental Conditions
The tree cover in Raalte leans heavily on oak, birch, and linden for pollen production, though the gap between centre and edge can be considerable depending on wind direction. the Sallandse Heuvelrug ridge, alongside the Overijssel farmland around Raalte, brings extra grass and tree pollen into an area known as a wooded ridge-edge town.
From a January opening of hazel and alder, Raalte's pollen season builds to its birch high point by April and continues into August. Oak and ash step in during April and May, after which grass becomes the standout source over June and July. the Sallandse Heuvelrug ridge plays a role in how pollen clears the area, alongside the wooded Salland moraine landscape that marks out Raalte within Overijssel.
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Frequently Asked Questions About Pollen in Overijssel
Is pollen high in Raalte right now?
Currently, there is no significant pollen in Raalte.
Will pollen levels change in Raalte tomorrow?
On 21 September 2026, pollen conditions in Raalte will be similar to today with no significant pollen expected.
Is pollen expected to decrease in Raalte this week?
According to the five-day outlook, artemisia pollen levels will increase later in the week.
Which pollen types are currently active in Raalte?
On 20 September 2026, there are no significant pollen types in Raalte.
When is pollen season in Raalte?
How often is the Raalte pollen forecast updated?
The Raalte pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Raalte 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 Raalte 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 Raalte, 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. |
Get More in the Airmine Pollen app
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).
