U.S. cities suffering most from spring allergies 2020

*"The 2020 Allergy Capitals™ research and ranking is reported by the Asthma and Allergy Foundation of America (AAFA). The ranking is based on analysis of data from the 100 most-populated Metropolitan Statistical Areas (MSAs) in the contiguous 48 states. The four (4) individual factors analyzed for the 2020 rankings are: seasonal pollen scores (spring and fall), over-the-counter medication use (allergy) and number of allergy specialists. For each factor, AAFA used the most recently available 12-month data. Weights are applied to each factor; factors are not weighted equally. Total scores are calculated as a composite of all four factors, and cities are ranked from highest total score (city rank #1) to lowest total score (city rank #100)."