Royan pollen forecast - today, tomorrow and the week ahead

On 20 July 2026, overall pollen levels in Royan are low. Grass is the main contributor to airborne pollen

On 21 July 2026, pollen conditions in Royan will be different from today, with grass at low levels, artemisia at low levels

According to the five-day outlook, grass pollen levels are expected to gradually decrease, while artemisia pollen will increase, suggesting mixed conditions later in the week.

On 20 July 2026, Grass is the dominant pollen source in Royan. birch, hazel, cypress, willow, alder, and artemisia are not currently active.

Pollen season in Royan gets underway in January and February with hazel and alder, before giving way to oak and plane, which peaks in April and May, before grass from vineyard and farmland takes the season into summer, before the oceanic-continental climate brings a quieter autumn.

The Royan 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 Royan, 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.