Heerenveen pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Heerenveen is none
Pollen Tomorrow
Tomorrow (21 September 2026) mugwort at moderate levels.
7-Day Trend
Over the next week mugwort will decrease; cypress, grass, 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) | 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) | Moderate | 29/100 |
Local Environmental Conditions
Oak, birch, and linden are the backbone of tree pollen in Heerenveen's parks and avenues, though levels vary noticeably between the dense centre and the leafier edges of town. the Friese meadows and Skoatterwald forest, alongside the Fryslân farmland around Heerenveen, brings extra grass and tree pollen into an area known as a meadow and forest-edge town.
Heerenveen's pollen season stretches from January to August, starting with hazel and alder catkins in deep winter before birch takes over through April. Through April and May, oak and ash add to the load, with grass then leading through June and into July. How pollen settles around Heerenveen owes something to the Friese meadows and Skoatterwald forest, with the speed-skating heartland of Fryslân shaping conditions further.
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Frequently Asked Questions About Pollen in Fryslân
Is pollen high in Heerenveen right now?
Currently, there is no significant pollen in Heerenveen.
Will pollen levels change in Heerenveen tomorrow?
On 21 September 2026, pollen conditions in Heerenveen will be different from today, with artemisia at moderate levels
Is pollen expected to decrease in Heerenveen this week?
According to the five-day outlook, artemisia pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.
Which pollen types are currently active in Heerenveen?
On 20 September 2026, there are no significant pollen types in Heerenveen.
When is pollen season in Heerenveen?
How often is the Heerenveen pollen forecast updated?
The Heerenveen pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Heerenveen 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 Heerenveen 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 Heerenveen, 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).
