Several metropolitan cities in the eastern US are some of the worst places in the country for seasonal allergy sufferers, including Greenville, South Carolina and Albany, New York, according to a report from USA Today.

To identify the 25 worst cities for people with spring allergies, 24/7 Tempo reviewed the Asthma and Allergy Foundation of America’s 2020 report on the 100 metropolitan cities where people are most affected by spring allergies. The AAFA ranking is based on a total score, which includes seasonal pollen measures, over-the-counter allergy medication use, and number of allergy specialists. For each city, AAFA obtained a comprehensive index of the population at risk of being affected by pollen and allergy prevalence for each pollen type, using the most recently available 12-month data.

The measure of fine particle pollution (PM2.5) comes from the Environmental Protection Agency’s 2020 report on air quality and air pollutants in the United States. Population figures are from the U.S. Census Bureau’s 2018 5-year American Community Survey.

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