Climate

Allergy season has gotten longer in Boston

Data: Climate Central; Chart: Alice Feng/Axios

Allergy season in the Boston area increased by 13 days on average between 1970 and 2021, per an analysis from Climate Central, a nonprofit climate news organization.

  • That's based on the number of days between the last freeze each spring and the first freeze each fall — essentially, the annual window during which seasonal allergy sufferers are most likely to rely on their antihistamine of choice to get by each day.
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