A 2021 study concluded pollen season in North America is 20 days longer over a 30-year period from 1990 to 2018.

As the temperatures rise with spring, so too does the pollen count. Pollen disperses more widely on clear and sunny days, requiring extra caution during outdoor activities. Pollen allergies occur when ...

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Michigan is under a high pollen count to start this week, May 26-27, meaning Michigan residents who suffer from hay fever may feel worsening symptoms. Birch, oak, mulberry and ash trees are the top ...