Quick Scoop: Pollen season usually winds down in late summer to fall , but the exact end depends on where you live and which pollen you’re reacting to. Tree pollen often eases by late spring or early summer , grass pollen by mid-to-late summer , and weed pollen—especially ragweed—can last until the first hard frost , often late October into November.

What that means

  • Tree pollen: usually ends by May to June in many places.
  • Grass pollen: often wraps up by July or August.
  • Weed pollen: commonly lasts the longest, often ending after the first hard frost.

Why it varies

Pollen seasons change with region, weather, and climate , so some people feel relief much earlier while others deal with symptoms into autumn. In some areas, allergy symptoms can even linger year-round because different plants release pollen at different times.

Practical shortcut

If you want the simplest answer: for most people, the worst of pollen season is over by late summer, but full relief may not come until fall.

If you want, I can also give you the answer for your specific location.