Barcelona pollen forecast - today, tomorrow and the week ahead

On 11 July 2026, overall pollen levels in Barcelona are low. Grass is the main contributor to airborne pollen

On 12 July 2026, pollen conditions in Barcelona will be different from today, with grass increasing

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

On 11 July 2026, Grass is the dominant pollen source in Barcelona. alder, artemisia, birch, hazel, cypress, and willow are not currently active.

Barcelona's pollen season runs from February through July, opening with cypress and plane tree pollen in late winter before grass pollen from surrounding farmland dominates through May and June. The warm Mediterranean climate means the season starts earlier and runs longer than in northern European cities, while sea breezes from the coast can periodically disperse pollen and the dry summer ends the season more abruptly than in Atlantic-facing cities.

The Barcelona 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 Barcelona, 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.