Kirkwall Stromness pollen forecast - today, tomorrow and the week ahead
Pollen Today
Today (20 September) pollen in Kirkwall Stromness is none
Pollen Tomorrow
Tomorrow (21 September 2026) grass at low levels.
7-Day Trend
Over the next week grass will decrease; cypress, 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) | Low | 5/100 | |
| Willow (Salicaceae) | None | 0/100 | |
| Mugwort (Artemisia) | None | 0/100 |
Local Environmental Conditions
The patchwork of fields nearby is a notable secondary source, feeding pollen into town whenever the wind shifts to the south-west. On top of that, alder and birch are the two species driving most tree pollen in Kirkwall Stromness, especially around parks and green corridors. Hay fever sufferers here typically notice symptoms peaking in late spring, then again during the summer grass season.
Want to know what triggers spring allergies in Kirkwall Stromness? Start with alder, then birch. Grass then takes over from May right through September, peaking around June and July for most people. Alder gets going around January and tapers off by April, before birch takes over, usually March to May. Not a bad idea to stock up on antihistamines before it all kicks off.
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Frequently Asked Questions About Pollen in Orkney Islands
Is pollen high in Kirkwall Stromness right now?
Currently, there is no significant pollen in Kirkwall Stromness.
Will pollen levels change in Kirkwall Stromness tomorrow?
On 21 September 2026, pollen conditions in Kirkwall Stromness will be different from today, with grass at low levels
Is pollen expected to decrease in Kirkwall Stromness this week?
According to the five-day outlook, grass pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.
Which pollen types are currently active in Kirkwall Stromness?
On 20 September 2026, there are no significant pollen types in Kirkwall Stromness.
When is pollen season in Kirkwall Stromness?
How often is the Kirkwall Stromness pollen forecast updated?
The Kirkwall Stromness pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Kirkwall Stromness 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 Kirkwall Stromness 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 Kirkwall Stromness, 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).
