How long does pollen last?

Weather Questions with Cody Nickel

If you’re someone who suffers from allergies, you may now be suffering more from red, itchy eyes and a runny nose.

That’s because (meteorological) spring is upon us and so is tree pollen – which shows up toward the end of February and lasts through April to May.

Although pine pollen is more evident now as it coats cars and sidewalks, most people are not allergic to it because it is so large, says Dorothy Cook with the Allergy Center at Brookstone.

More people are sensitive to smaller, lighter pollen from oak, pecan and birch trees.

But it’s not just spring when pollen is prevalent.

During the summer, grass pollen is the highest – which starts around the middle of March and lasts through August.

Weeds start pollinating in July but can go through fall or until the first hard freeze, adds Cook.

Some trees – like Cedar, Juniper and Cedar Elm (Christmas trees) – will pollinate even in the winter, says Cook.

The weather can also affect how bad pollen is for the day.

Pollen counts are higher on warm, dry and windy days between 10:00 a.m. est and 4:00 p.m. est and lower on cool and rainy ones.

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