Oss pollen forecast - today, tomorrow and the week ahead

Today (25 June) pollen in Oss is high; grass is high; cypress is low. Tomorrow (26 June 2026) levels are similar. Over the following five days cypress and grass will decrease. Forecasts are calculated by Airmine using satellites to map local vegetation and determine pollen season onset.

For long term forecasts and maps, see the Airmine app

Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team

Oss sits along the Maas River, where oak, birch, and linden are the main tree pollen sources in riverfront green spaces and parks, with exposure varying between these areas and the more built-up city centre. Surrounding North Brabant farmland and heathland contribute substantial grass and tree pollen, while the flat, open landscape allows pollen to disperse readily under prevailing westerly winds.

Today - 25 June

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    Low

    1/100

  • Grass (Poaceae):

    High

    56/100

  • Willow (Salicaceae):

    None

    0/100

High pollen levels may trigger sneezing, itchy eyes, and congestion. Airmine's neighbourhood estimates use satellites to map local vegetation and a statistical prediction model, updated four times daily.

Tomorrow - 26 June

  • Alder (Alnus):

    None

    0/100

  • Birch (Betula):

    None

    0/100

  • Hazel (Corylus):

    None

    0/100

  • Cypress (Cupressaceae):

    Low

    21/100

  • Grass (Poaceae):

    High

    70/100

  • Willow (Salicaceae):

    None

    0/100

Frequently Asked Questions

Is pollen high in Oss right now?

On 25 June 2026, overall pollen levels in Oss are high. Grass is the main contributor to airborne pollen, while cypress remain at lower levels

Will pollen levels change in Oss tomorrow?

On 26 June 2026, pollen conditions in Oss will be similar to today, with cypress at low levels, grass at high levels

Is pollen expected to decrease in Oss this week?

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

Which pollen types are currently active in Oss?

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

When is pollen season in Oss?
Oss's pollen season runs from January through August, opening with hazel and alder from January before birch peaks through April. Oak and ash follow through April and May, with grass peaking through June and July. The Maas River corridor channels airflows, while surrounding North Brabant farmland and heathland extend substantial grass and tree pollen into August under the flat, open landscape.
How often is the Oss pollen forecast updated?

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

Does pollen in Oss 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 Oss 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 Oss, 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.

Want to see pollen forecasts for other cities in Netherlands?

Check pollen in other popular cities:

Data provided by Airmine — Last update: 25 Jun 2026, 09:02 CET (Data is updated four times daily.)

This page provides the latest public pollen forecast for Oss.

For long term forecasts and maps, see the Airmine app

Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team

Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.