Pollen Season Starts Early — And It’s Looking Like a Long One

Written by Camilla Jessen

Mar.17 - 2025 10:56 PM CET

Health
Photo: Shutterstock.com
Photo: Shutterstock.com
Early start and cross-reactions stretch the season for many.

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Sneezing fits, watery eyes, and an ever-present runny nose — for many people, spring signals not just blooming trees, but a season-long struggle with pollen.

And according to Welltica, the first signs of the 2024 pollen season are already here.

Pollen from alder and hazel — two of the usual early offenders — has already been detected in air quality measurements, marking a familiar but unwelcome start to the season.

Earlier Start, Longer Struggle

In line with recent years, the season has started earlier than usual, raising concerns that allergy symptoms may persist longer into spring and even early summer.

Weather plays a crucial role in how severe the season will be. Cooler temperatures can slow the spread of pollen, while a sudden warm spell could cause pollen levels to spike.

Rain can help keep pollen levels down—but let’s be honest, how often can you count on a perfectly timed rain shower?

Why Are Symptoms Already Showing Up?

If you typically react to birch pollen and are already experiencing allergy symptoms, there’s a scientific explanation: cross-reactions.

Because alder, hazel, and birch trees all belong to the same botanical family, their pollen contains similar allergenic proteins. That means your immune system may mistake one for the other, causing symptoms even before birch pollen actually hits the air.

This phenomenon is especially frustrating for those who expect symptoms to begin later in the spring, only to be caught off guard weeks earlier.

What You Can Do to Minimize Pollen Impact

If you're among the millions in Denmark dealing with seasonal allergies, there are effective ways to manage your symptoms and still enjoy the season:

  • Track pollen levels daily using forecasts and apps to plan your time outside.

  • Ventilate your home smartly — air out rooms early in the morning or late at night when pollen counts are lower.

  • Shower and change clothes after being outdoors to avoid bringing pollen into your home — especially your bed.

  • Use medical treatments such as antihistamines or nasal sprays if your symptoms are moderate to severe.

  • Wear sunglasses when outside — they help protect your eyes from airborne pollen.

And if your symptoms have changed or worsened this year, it's worth speaking with your doctor to review your treatment plan or consider allergy testing.

Spring doesn't have to mean suffering. With a bit of planning — and maybe some extra tissues in your pocket — you can still make the most of the season.