Borås pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Borås is none
Pollen Tomorrow
Tomorrow (21 September 2026) levels are similar to today.
7-Day Trend
Over the next week cypress, grass, willow, and mugwort 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
Borås' parks and the Viskan River corridor feature birch, oak, and pine as the main tree pollen sources, with exposure varying between these green areas and the more built-up city centre. Surrounding Västergötland farmland and woodland contribute substantial tree and grass pollen, while the Atlantic-influenced climate means more frequent rainfall than in more continental Swedish cities, providing regular interruptions throughout the season.
Borås' pollen season runs from February through August, opening with alder and hazel from February before birch peaks through May. Grass follows through June and July. The Viskan River valley channels airflows, while surrounding Västergötland farmland contributes substantial grass pollen. The Atlantic-influenced climate means more frequent rainfall than in more continental Swedish cities, providing regular interruptions throughout the season.
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Frequently Asked Questions About Pollen in Västra Götaland
Is pollen high in Borås right now?
Currently, there is no significant pollen in Borås.
Will pollen levels change in Borås tomorrow?
On 21 September 2026, pollen conditions in Borås will be similar to today with no significant pollen expected.
Is pollen expected to decrease in Borås this week?
According to the five-day outlook, pollen levels are expected to remain relatively stable.
Which pollen types are currently active in Borås?
On 20 September 2026, there are no significant pollen types in Borås.
When is pollen season in Borås?
How often is the Borås pollen forecast updated?
The Borås pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Borås 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 Borås 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 Borås, 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).
