Birch pollen – the north gets the rest


Still birch pollen in the Nordics – season almost over in rest of Europe

The birch blooms late in the north this year. Spring made an early visit in April, but May has been unusually cold. Still much the south of Scandinavia has seen the peak of birch pollen, as has the British Isles. In Central and Southern Europe, only small amounts of birch pollen remain and in most places the season is over. The hotspot is now Middle Scandinavia, notably in Sweden and Norway, as well as the Baltic countries.

Birch pollen 20 May 2020

The front continues northwards

The next ten days central parts of Norway, Sweden and Finland can expect high birch pollen levels. Major spread further north will probably be delayed into June, as the snow hopefully will finally melt in the northernmost regions.

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.

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

Airmine app

Track your symptoms to air pollution and pollen & get local air quality forecasts

Get it on Google Play


WHO tightens air quality guidelines

WHO releases stricter air quality guidelines to protect human health. The new standard for fine particles (PM2.5) is halved, stressing that exposure to PM2.5 is a major health risk.

The accidental badger detector

PM2.5 levels peaked late at night and early mornings at our sensor test site and we struggled to find out why. Turns out the answer had fur and four legs.

We’re measuring pollen!

We are running our airminer 2.0 sensors to calculate local pollen levels. As expected, pollen levels vary with temperature and precipitation, but we also see significant variations through the day.

When to expect birch pollen in Norway?

Hazel and alder is flowering in Southern Norway, but the key allergen to many of us is birch. When can we expect the birch pollen season to start?

Spring in Europe – alder, hazel and birch pollen

We are heading into warmer and lighter days in Europe, lockdowns or not. And no surprise, the pollen is faithfully here.

Grass pollen levels still high in Central Europe

High levels in Denmark, Germany and Poland, France may have seen the peak. Grass pollen in UK and Scandinavia is on the rise as northern Europe really warms up.