Story perspectives

Seattle-Tacoma Allergy Season Extends 12 Days Due to Climate Change

4/2/2026

Summary

Story summary

Climate Central reports the Seattle-Tacoma allergy season lengthened by about 12 days since 1970.
Climate change has increased freeze-free days, enabling plants to grow and release pollen earlier.
Dr. Rahool Davé notes alder and birch are the primary pollen sources, not cherry blossoms.
He warns pollen season may be the worst on record, with higher exposure increasing risks.
Davé recommends HEPA filters indoors, masks outdoors, and showering after being outside.

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Story summary

Climate Central reports the Seattle-Tacoma allergy season lengthened by about 12 days since 1970.
Climate change has increased freeze-free days, enabling plants to grow and release pollen earlier.
Dr. Rahool Davé notes alder and birch are the primary pollen sources, not cherry blossoms.
He warns pollen season may be the worst on record, with higher exposure increasing risks.
Davé recommends HEPA filters indoors, masks outdoors, and showering after being outside.