Here are the places where it can take off first • Then the pollen season can be destroyed
Wednesday may be the hottest day of the year with temperatures up to 20 degrees, according to several experts.
It also means higher pollen levels – and the risk of former birch blossoms.
– If the weather continues, it can happen in the middle of April, even though it is unusual, says Pia Östensson, curator at the Palenological Laboratory.
Much points to a warm and sunny week and on Wednesday the temperature can rise to 17-18 degrees. But that in turn means high pollen levels. Al- and hazel is already blooming too full, but soon the birch can also knock out- earlier than usual, according to pollen expert Pia Östensson.
– It is extremely unusual for it to bloom earlier than later part of April. But it may happen that it starts before, she says.
Risk of setbacks
Birch pollen allergy is the most common type of allergy and affects a large part of the population annually. It usually takes until the end of April before the birch strikes, but this year it can happen already in the middle of the month if the warm weather lasts.
– It would surprise me, but it is also very possible that it happens earlier. Who knows, it might be very hot, says Pia Östensson.
At the same time, the weather can turn already into the weekend and switch to cooler temperatures. Should the birch be ripened early, flowering can take damage if the cold sweeps in.
– There is a risk that there will be setbacks, then there will be none of the plant instead. If the flowering on many birches is destroyed and freezing, the entire pollen season will be destroyed, but that belongs to the unusual. But then they can charge and become even more next year instead.
Here it can start – just this year
So far, the birch pendants have not matured unusually much, but at the same time the forecast shows that much indicates that spring has taken place throughout Sweden and that the heat spreads evenly across the cities.
The most common is that the birch starts to flower in southern Sweden, but this year you can see that other places are unusually hot.
– It may be in Stockholm because we have the warmer locally, but also other places such as Sundsvall has had an unusually warm spring, even though it is north, says Pia Östensson.