Understanding the Extending Allergy Season in Spain
Spring is just around the corner, bringing joy for many eager to spend more time outdoors. However, for allergy sufferers, this season can prove to be an annual nightmare. Due to changing meteorological patterns and the ongoing climate crisis, experts are labeling the situation in Spain as increasingly severe. The predictions for 2026 are particularly alarming, indicating more extreme allergy conditions ahead.
The Experts’ Warning
The Spanish Society of Allergology and Clinical Immunology has raised concerns that this spring could be one of the harshest in recent memory for those allergic to pollen. It’s not simply a case of increased pollen; the behavior of plants is undergoing a significant change. The combination of heavy winter rains and unusually mild temperatures has created what experts describe as an “explosive cocktail” of allergenic potential.
The Pollen Map: What the Data Reveals
To fully grasp the gravity of the situation, one must review data from the SEAIC, which utilizes various climatic metrics to forecast pollen levels. This year, southern and central Spain will face substantial challenges, with Extremadura experiencing pollen concentrations soaring between 10,000 and 12,000 grams per cubic meter. In Andalusia, cities like Seville are projected to see concentrations between 6,000 and 8,000 grams per cubic meter, while Jaén faces intense levels due to its abundant olive trees.
In the center and north of the peninsula, areas like Madrid and Toledo are expected to hit moderate to high pollen levels that could trigger serious allergy symptoms, although the northern regions and the Mediterranean coast may record milder or moderate levels this season.
The Perfect Storm of Allergies
Historically, allergy seasons followed predictable patterns, but those days are gone. The continuous rainfall has nourished the land, provoking robust growth among plants, particularly grasses and olive trees. This phenomenon is compounded by premature heat, leading to earlier and prolonged pollination. As a result, the vice president of the SEAIC warns that the environment is becoming increasingly hostile for those suffering from allergies.
Shifts in Allergy Patterns
Analysis of recent years indicates that 2026 aligns with a troubling trend: the pollen season in Spain has lengthened by about 25 days since the 1990s. The rising temperatures and increasing desertification are not just extending the allergy calendar but also introducing new allergenic species, such as amaranths, into areas that previously saw little pollen.
Factors Influencing Allergic Reactions
Another crucial aspect to consider is the quality of pollen, which has been significantly affected this season. Increased carbon dioxide levels in the atmosphere act as a fertilizer for plants, causing them to produce more pollen and express more proteins that trigger immune responses—leading to intensified allergy symptoms. Additionally, atmospheric pollution undermines respiratory defenses, making it easier for pollen to infiltrate our lungs.
Prevention and Preparedness
Given the approaching allergy season, proactive measures should be taken. Begin allergy treatments as prescribed by a healthcare professional before symptoms manifest. Monitoring pollen levels through official sources and wearing masks during high pollen periods can also mitigate exposure and discomfort.
As we navigate this new allergy landscape, it’s crucial to stay informed and prepared. The realities of spring in Spain are undeniably changing, and awareness will be our best tool in facing the challenges ahead.

