Birch trees are still in bloom.
On Thursday, 527 birch pollen grains/m³ of air were measured in Brussels.
The weather conditions forecasted for this weekend will favor the pollen dispersal in the air.
People sensitized to birch pollen should remain cautious.
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The summer snow you can see drifting in the air is not pollen but poplar and willow seeds (white fluffy threads), and also dandelion seeds. This cottony fluff does not cause allergy.
A few useful recommendations for people sensitized to birch pollen :