This very mild start to the year 2023 had favored the flowering of the trees with in particular the first hazel pollen (Betulaceae family) which was already there.
But the situation is already deteriorating. In his bulletin updated in recent hours, the National Aerobiological Surveillance Network (RNSA) has placed the Alpes-Maritimes in red.
In the department, the risk of allergy is high for pollen from cupressaceae-taxaceaeto which it is necessary to add the pollens in increase ofalder and to a lesser extent ash and D’urticaceae.
Anticyclonic weather and mild temperatures
“The anticyclonic weather and the milder temperatures this week are favoring the flowering of trees throughout the territory, and in particular that of hazelnut trees and alders (Betulaceae family) and ash trees for which the risk of allergy will very often be level. AVERAGE”explains the RNSA.
This risk should remain high for several weeks.
