Birch pollen – how did it develop?


Watch our simulation of the 2020 birch pollen spread in Europe

It is all over for this time, and we have dived into our data and calculations and visualised how the birch pollen season developed this year.

Visualisation of the birch pollen spread in Europe 2020. Red means high pollen level, yellow moderate, dark green moderate-low levels and light green low levels.

Observant (or allergic) readers will notice that the simulation starts later than the onset of the season, Central Europe had birch blooming in March. We did not start the simulation earlier due to limitations in our data sets.

Later than usual in the north

If we compare this year’s development with normals, we see that the birch pollen hit Northern Europe later than usual this year. (Watch our video How the birch pollen front moves through Europe.) May was much colder than normal in most of Scandinavia, which explains the late pollen spread. Central and Southern Europe experienced a birch pollen season fairly close to normal.

Follow Airmine’s pollen stories

We are publishing updates on pollen in Europe regularly, focus ahead will be on grass and mugwort (artemisia). You may be interested in some of our previous posts: Grass pollen levels still high in Central Europe, The birch pollen front continues north – temporary slowdown due to colder weather.

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Birch pollen – how did it develop?

The birch season is over for this year - we have dived into our data and created a visualisation of how it developed in Europe.

Grass pollen levels still high in Central Europe

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Grass blooming in Central Europe

The grass season is long - and Central Europe is in the midst of the blooming. Northern Europe is starting to feel the season.

Birch pollen – the north gets the rest

The birch pollen season is almost finished in most of Central and South Europe. The inhabitants of the northern regions can still expect moderate to high levels, as the weather (finally) warms up.

A first look at the grass pollen season

Grass pollen is the most common pollen allergy in Europe and the season is well under way. Central Europe can expect high levels, while the cold weather further north let us wait for the spread.

The birch pollen front continues north – temporary slowdown due to colder weather

Central Europe past the peak, Nordic countries still on the rise The...

Birch pollen season in full swing in Europe

The birch pollen season is at its height in Central Europe, with high levels recorded across the continent. Southern Scandinavia is starting to feel the birch as well, and will see increasing pollen levels the next ten days.

Birch pollen high in France and Austria – onset further north delayed

Due to warm weather, the birch pollen has increased rapidly in Southern France and Austria the last days. Low temperatures are likely to delay the onset of birch pollen further north.

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