Brussels pollen forecast — Royal Waterloo Golf Club – Championship Course neighborhood
Pollen Today
Today (20 September) pollen in Royal Waterloo Golf Club – Championship Course, Brussels is low; mugwort is low.
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) | Low | 24/100 |
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 | 18/100 |
Local Environmental Conditions
Royal Waterloo Golf Club's Belgian Brabant woodland setting features oak, birch, and linden as the main pollen sources, with exposure varying between the more open fairways and the densely wooded sections. Surrounding Brabant Wallon farmland and Soignes Forest contribute substantial tree and grass pollen, while the temperate oceanic climate means frequent rainfall provides regular interruptions and the Soignes Forest beech woodland contributes additional distinctive local pollen throughout.
Pollen from oak, birch, and plane trees builds through April and May, tapering off as grass pollen takes over across June through August. Urban Brussels sees a modest ragweed uptick from late August, though nothing like Central European levels further east, and conditions at Royal Waterloo Golf Club – Championship Course generally track the broader regional pattern for this part of Belgium.
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Sports venues in Brussels 2 sports venues
Frequently Asked Questions About Pollen in Brussels-Capital Region
Is pollen high in Brussels right now?
On 20 September 2026, overall pollen levels in Brussels are low. Artemisia is the main contributor to airborne pollen
Will pollen levels change in Brussels tomorrow?
On 21 September 2026, pollen conditions in Brussels will be similar to today, with artemisia at low levels
Is pollen expected to decrease in Brussels this week?
According to the five-day outlook, artemisia pollen levels will increase later in the week.
Which pollen types are currently active in Brussels?
On 20 September 2026, Artemisia is the dominant pollen source in Brussels. grass, willow, and cypress are not currently active.
When is pollen season in Brussels?
How often is the Brussels pollen forecast updated?
The Brussels pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Brussels 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 Brussels 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 Brussels, 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).
