# Global and regional pollen allergy trends

> Live situation record from CLSTR: https://clstr.news/situations/global-and-regional-pollen-allergy-trends
> Updated: 2026-08-27T03:21:13.000Z. Sources: 2. Developments: 2.

Research from the University of Augsburg indicates that birch and grass pollen concentrations in Bavaria are significantly linked to an increase in outpatient emergency asthma treatments. By analyzing automated measurements in Augsburg, Munich, and Nuremberg, researchers accounted for variables such as humidity, temperature, and air pollution, noting that effects from specific pollen types may occur with a delay.

On a broader scale, health specialists report that rising pollen concentrations are driving seasonal respiratory issues. Experts suggest that climate change has altered pollination cycles, contributing to a trend where the World Allergy Organization estimates 30% to 40% of the global population lives with allergic pathologies, a figure that could reach 40%–50% by 2050. To manage these risks, specialists recommend reducing exposure through specific ventilation timing and hygiene practices.

## Timeline

### 2026-08-27: Spring pollen increases seasonal allergy risks

Rising pollen levels and environmental factors like climate change are driving an increase in seasonal allergies, with experts projecting global allergy rates could reach 50% by 2050.

2 sources. https://clstr.news/cluster/spring-pollen-increases-seasonal-allergy-risks

### 2026-08-20: Pollen levels linked to increased asthma emergencies in Bavaria

A University of Augsburg study links high concentrations of birch and grass pollen to increased emergency asthma treatments in Bavaria, suggesting real-time data could improve early warning systems.

2 sources. https://clstr.news/cluster/pollen-levels-linked-to-increased-asthma-emergencies-in-bavaria

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Cite as: Global and regional pollen allergy trends. CLSTR, https://clstr.news/situations/global-and-regional-pollen-allergy-trends