’s-Hertogenbosch pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in ’s-Hertogenbosch is none
Pollen Tomorrow
Tomorrow (21 September 2026) mugwort at low levels.
7-Day Trend
Over the next week mugwort will increase; 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) | Low | 14/100 |
Local Environmental Conditions
s-Hertogenbosch sits at the confluence of the Dommel and Aa rivers, where oak, birch, and linden are the main tree pollen sources alongside grass from urban green spaces. Exposure varies between the greener river corridors and the more built-up city centre, while surrounding North Brabant farmland and heathland contribute substantial grass and tree pollen across the historic city.
s-Hertogenbosch's pollen season runs from January through August, opening with hazel and alder from January before birch peaks through April. Oak and ash follow through April and May, with grass peaking through June and July. The Dommel and Aa river confluence concentrates pollen under calm conditions, while surrounding North Brabant farmland and heathland extend grass and tree pollen into August.
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Frequently Asked Questions About Pollen in Noord-Brabant
Is pollen high in ’s-Hertogenbosch right now?
Currently, there is no significant pollen in ’s-Hertogenbosch.
Will pollen levels change in ’s-Hertogenbosch tomorrow?
On 21 September 2026, pollen conditions in ’s-Hertogenbosch will be different from today, with artemisia at low levels
Is pollen expected to decrease in ’s-Hertogenbosch this week?
According to the five-day outlook, artemisia pollen levels will increase later in the week.
Which pollen types are currently active in ’s-Hertogenbosch?
On 20 September 2026, there are no significant pollen types in ’s-Hertogenbosch.
When is pollen season in ’s-Hertogenbosch?
How often is the ’s-Hertogenbosch pollen forecast updated?
The ’s-Hertogenbosch pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in ’s-Hertogenbosch 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 ’s-Hertogenbosch 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 ’s-Hertogenbosch, 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).
