Heist-op-den-Berg pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Heist-op-den-Berg 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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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 | 22/100 |
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 | 17/100 |
Local Environmental Conditions
Vegetation patterns around Heist-op-den-Berg reflect its setting on the Campine plain in Antwerp province: oak and hornbeam lead the tree pollen count, and grass and nettle pollen from the surrounding Antwerpen countryside adds a further layer through the season. Local parks and street trees create pockets of higher exposure near the greener parts of town.
Heist-op-den-Berg follows a pattern typical of Antwerpen: hazel and alder first, then oak and hornbeam over the following weeks, then grass and nettle pollen into early summer, running January to August overall. ragweed adds a modest late-season tail in areas near farmland.
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Frequently Asked Questions About Pollen in Antwerpen
Is pollen high in Heist-op-den-Berg right now?
On 20 September 2026, overall pollen levels in Heist-op-den-Berg are low. Artemisia is the main contributor to airborne pollen
Will pollen levels change in Heist-op-den-Berg tomorrow?
On 21 September 2026, pollen conditions in Heist-op-den-Berg will be similar to today, with artemisia at low levels
Is pollen expected to decrease in Heist-op-den-Berg this week?
According to the five-day outlook, artemisia pollen levels will increase later in the week.
Which pollen types are currently active in Heist-op-den-Berg?
On 20 September 2026, Artemisia is the dominant pollen source in Heist-op-den-Berg. willow, cypress, and grass are not currently active.
When is pollen season in Heist-op-den-Berg?
How often is the Heist-op-den-Berg pollen forecast updated?
The Heist-op-den-Berg pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Heist-op-den-Berg 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 Heist-op-den-Berg 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 Heist-op-den-Berg, 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).
