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 has seen its culmination in Central Europe and UK, as we can see from the map below. The Nordic countries still have the peak ahead, and can expect a marked increase in pollen levels the next ten days. We also foresee the pollen front to move eastwards into Western Russia.

Weather change gives a temporary slowdown in the north

In our pollen report last week, we actually recorded higher levels in Scandinavia, the Baltic states and Finland than we see today. The second half of April saw almost summer-like days in large parts of Southern Scandinavia, with high temperatures propelling the birch pollen season. The weather returned to more normal conditions this week, and the pollen spread has taken a temporary drop.

Birch pollen 29 April 2020
Estimated levels for birch pollen 29 April 2020. Red colour means high pollen levels, yellow moderate, dark green low-moderate and light green low levels.

Outlook – the north and north-east will see a rise

While Central Europe and the UK may be over the peak, people allergic to birch pollen in the southern parts of Norway, Sweden and Finland still have high-level days ahead. We expect the birch pollen to develop as depicted in the map below. However, be aware that changes in temperature or rainy days may alter the picture.

Birch pollen forecast for 08 May 20
Birch pollen forecast for 08 May 2020. Red colour means high pollen levels, yellow moderate, dark green low-moderate and light green low levels.

Follow the pollen season with Airmine

You may also be interested in our other stories on pollen in Europe. Our video showing the average development of birch pollen confirms the delay in Northern Scandinavia. The late start comes as no surprise to the inhabitants north of the polar circle, where the snow still lays deep in most places.

Credits: Maps and figures created with contributions from Rasmus Moldstad Bakken.

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