Oslo pollen forecast — Groruddalen neighborhood
Pollen Today
Today (20 September) pollen in Groruddalen, Oslo 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
Oslo Groruddalen features birch, alder, and willow lining the Alna River corridor as the main pollen sources across this post-industrial eastern Oslo suburban valley. The valley concentrates pollen under calm conditions, while birch peaks through April and May, grass peaks through June and July, and mugwort extends into September throughout this eastern Oslo valley corridor.
The yearly pollen cycle in Groruddalen covers the period from February through August, starting with alder and hazel pollen from the start of February, with birch soon overtaking as the main source continuing right through May. Grass pollen extends the season through the summer months of June and July. With the relatively mild climate around the inner Oslofjord, Oslo's local climate gives this area its own distinct rhythm within the wider Norwegian season.
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Pollen forecast neighborhoods 20 neighborhoods
Sports venues in Oslo 3 sports venues
Frequently Asked Questions About Pollen in Oslo
Is pollen high in Oslo right now?
Currently, there is no significant pollen in Oslo.
Will pollen levels change in Oslo tomorrow?
On 21 September 2026, pollen conditions in Oslo will be similar to today with no significant pollen expected.
Is pollen expected to decrease in Oslo this week?
According to the five-day outlook, pollen levels are expected to remain relatively stable.
Which pollen types are currently active in Oslo?
On 20 September 2026, there are no significant pollen types in Oslo.
When is pollen season in Oslo?
How often is the Oslo pollen forecast updated?
The Oslo pollen forecast is updated four times daily. See the timestamp below for the most recent update.
Does pollen in Oslo 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 Oslo 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 Oslo, 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).
