Climate Change & Allergies: What You Need to Know
- Allergy sufferers are facing longer and more intense allergy seasons due to climate change, according to a World Meteorological Organization (WMO) report.
- Fernandez, president of the French Allergists' Union, noted that the progression from hay fever to asthma is happening more rapidly.
- According to nicolas Visez, an aerobiologist at the University of Lille, different plant species react uniquely to environmental factors.
climate change is considerably worsening pollen allergies, leading to longer and more intense allergy seasons. Discover how rising carbon dioxide and air pollution are fueling increased pollen production, creating a perfect storm for allergy sufferers. Reports highlight the rapid progression of hay fever to asthma and project a dramatic increase in ragweed allergies across Europe. Initiatives like AutoPollen and collaborations with MeteoSwiss proactively monitor pollen distribution, offering critical data and protective measures. Learn how countries are responding by prioritizing less allergenic species in landscaping and implementing plans to reduce major pollen sources. This critical information is brought to you by News Directory 3. Discover what’s next regarding allergy and climate change impacts.
Climate Change Intensifies Pollen Allergies
Allergy sufferers are facing longer and more intense allergy seasons due to climate change, according to a World Meteorological Organization (WMO) report. Rising carbon dioxide levels and increased air pollution are contributing to higher pollen production and more allergenic pollen.

dr. Fernandez, president of the French Allergists’ Union, noted that the progression from hay fever to asthma is happening more rapidly. “Now that person can become asthmatic after one or two years,” Fernandez said, whereas previously, hay fever might persist for years without escalating to asthma.
According to nicolas Visez, an aerobiologist at the University of Lille, different plant species react uniquely to environmental factors. As an example, birch trees may decline in hotter, drier conditions, while ragweed, a highly allergenic invasive plant, thrives.
“There’s no doubt that climate change is having an effect,” Visez said. A 2017 study projected that ragweed allergies in Europe could more than double by 2041-2060, affecting 77 million people, up from 33 million.
Several initiatives are underway to address the increasing allergy burden. The Europe-wide “AutoPollen” program aims to provide real-time data on pollen and fungal spore distribution. In Switzerland, a collaboration with MeteoSwiss allows patients to match allergy profiles with allergen maps. Some parts of France have established “pollinariums” to monitor the frist pollen releases, enabling timely protective measures.
botanist Salome Pasquet noted that hazelnut trees are blooming as early as mid-December due to mild winters.Some countries are taking direct action, such as Japan’s plan to reduce cedar trees, a major pollen source. European countries are also prioritizing less allergenic species like maple and fruit trees in landscaping.
Simon Barthelemy,an architect near Paris,experienced severe eye allergies triggered by birch trees in his garden. “I’m on antihistamines,but if I don’t take them I get itchy eyes,I’m very tired,I cough… I can’t sleep at night,” he said.
