As climate change worsens pollen seasons, these U.S. cities top the list for 2025, according to a new report from the Asthma and Allergy Foundation of America.

"Millions of people living with seasonal allergies will be struggling with more intense symptoms that will likely stick around longer this year," per an expert.

Climate Data Online (CDO) of the National Centers for Environmental Information (NCEI)—previously the National Climatic Data Center (NCDC)—provides free access to one of the most significant archives ...