Trofors pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Trofors 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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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
Trofors is a small Nordland village in Grane municipality in the Vefsna valley where birch, alder, and boreal valley woodland are the main local pollen sources. The enclosed Vefsna valley concentrates pollen under calm conditions, while the subarctic continental setting means birch peaks intensely through May before grass contributes through June and July and the season ends earlier than in southern Norway throughout this remote Nordland valley community.
Trofors typically experiences a pollen season that begins in March and continues through August, beginning with alder and hazel already by March, before birch surges to its highest levels through June. Grass pollen then carries the season through the summer months of June and July. With the maritime climate that moderates temperature swings near Trofors, the local climate means conditions here can diverge a bit from the textbook national timeline.
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Frequently Asked Questions About Pollen in Nordland
Is pollen high in Trofors right now?
Currently, there is no significant pollen in Trofors.
Will pollen levels change in Trofors tomorrow?
On 21 September 2026, pollen conditions in Trofors will be similar to today with no significant pollen expected.
Is pollen expected to decrease in Trofors this week?
According to the five-day outlook, pollen levels are expected to remain relatively stable.
Which pollen types are currently active in Trofors?
On 20 September 2026, there are no significant pollen types in Trofors.
When is pollen season in Trofors?
How often is the Trofors pollen forecast updated?
The Trofors pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Trofors 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 Trofors 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 Trofors, 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).
