Hudiksvall pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Hudiksvall 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
Hudiksvall's tree pollen comes mainly from spruce, birch, and oak growing in parks and along residential streets rather than the compact centre. Open fields near the Bothnian Sea archipelago let grass and crop pollen spread widely whenever conditions are dry and breezy. Forestry and light industry plays little role in vegetation-driven pollen here, which is shaped instead by the surrounding countryside.
Hudiksvall's pollen season is compressed, running from March through September, with alder and birch arriving later than in southern Sweden but peaking more intensely over a shorter window. From June onward, grass overtakes birch as the main pollen source for several weeks. Air moving across the Bothnian Sea archipelago periodically clears or concentrates pollen depending on which way the wind is blowing. Forestry and light industry activity in the area has little direct bearing on pollen levels, which instead track the regional spruce and farmland cover.
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Frequently Asked Questions About Pollen in Gävleborg
Is pollen high in Hudiksvall right now?
Currently, there is no significant pollen in Hudiksvall.
Will pollen levels change in Hudiksvall tomorrow?
On 21 September 2026, pollen conditions in Hudiksvall will be similar to today with no significant pollen expected.
Is pollen expected to decrease in Hudiksvall this week?
According to the five-day outlook, pollen levels are expected to remain relatively stable.
Which pollen types are currently active in Hudiksvall?
On 20 September 2026, there are no significant pollen types in Hudiksvall.
When is pollen season in Hudiksvall?
How often is the Hudiksvall pollen forecast updated?
The Hudiksvall pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Hudiksvall 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 Hudiksvall 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 Hudiksvall, 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).
