Horten kommune pollen forecast - today, tomorrow and the week ahead

On 16 July 2026, overall pollen levels in Horten kommune are moderate. Cypress is the main contributor to airborne pollen, while grass remain at lower levels

On 17 July 2026, pollen conditions in Horten kommune will be similar to today, with cypress at medium levels, grass at medium levels

According to the five-day outlook, cypress, grass, and artemisia pollen levels will increase later in the week.

On 16 July 2026, Cypress is the dominant pollen source in Horten kommune. grass are also present but at lower levels. birch, hazel, willow, alder, and artemisia are not currently active.

For Horten kommune, the pollen season begins in February and continues through August, opening with alder and hazel from about February, before birch surges to its highest levels and staying strong through May. Grass pollen picks up next over June and July. With the relatively mild Oslofjord-adjacent climate near Horten kommune, the local climate gives this area its own distinct rhythm within the wider Norwegian season.

The Horten kommune 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 Horten kommune, 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.