How climate change makes your allergies worse
Summary
Climate change is making allergy seasons longer and more severe across much of the Northern Hemisphere. Rising temperatures and increased carbon dioxide help plants produce more pollen, which worsens allergy symptoms for millions of people.Key Facts
- About 25% of U.S. adults and 20% of children have seasonal allergies.
- Climate change causes earlier spring blooms and longer growing seasons, increasing pollen production.
- Higher carbon dioxide levels can boost pollen amounts by up to 200% by the end of the century.
- Some areas like the Ohio River Valley and Pacific Northwest expect high tree pollen levels this spring.
- Ragweed and other plants flower longer due to warmer temperatures and delayed frosts.
- Mold allergies are rising because climate change increases humidity and flooding, helping mold grow.
- Allergy symptoms are becoming more intense and harder to control with usual treatments.
- Natural disasters linked to climate change, such as hurricanes, can worsen allergy conditions.
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