Oslo pollen forecast — Gamle Oslo neighborhood

On 25 June 2026, overall pollen levels in Oslo are moderate. Cypress is the main contributor to airborne pollen, while grass and birch remain at lower levels

On 26 June 2026, pollen conditions in Oslo will be different from today, with grass at medium levels, birch at low levels and cypress continuing to decline

According to the five-day outlook, cypress, grass, and birch pollen levels are expected to gradually decrease, suggesting improving conditions later in the week.

On 25 June 2026, Cypress is the dominant pollen source in Oslo. grass and birch are also present but at lower levels. hazel, willow, and alder are not currently active.

Oslo Gamle Oslo features the neighbourhood's characteristic birch and linden street trees as the main pollen sources alongside the Ekebergparken forest above and the Oslofjord waterfront below in this eastern Oslo historic district. The fjord position means onshore winds can periodically disperse pollen, while birch peaks through April and May, grass peaks through June and July, and mugwort extends into September throughout this historic eastern Oslo waterfront neighbourhood.

The Oslo pollen forecast is updated four times daily. See the timestamp below for the most recent update.

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.

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.