How climate change makes your allergies worse

Climate change is making pollen season longer and more intense, worsening health effects for millions of Americans with seasonal allergies and asthma . Warmer weather signals plants to bloom earlier and longer, and increased atmospheric carbon dioxide stimulates plants to produce more pollen . Climate-change-driven heat waves, air pollution and natural disasters can also exacerbate allergy symptoms .

Source: Ars Technica | 2026-05-08