Only Orne, Sarthe, Mayenne, Ille-et-Vilaine, Morbihan and Finistère are at "medium" risk in metropolitan France. The risk of allergy for grasses will remain at a high level throughout the France, except in Brittany where it will be of medium level.
"Even today, there was a peak at the very beginning of the day and concentrations will remain high at least until mid-afternoon," says the RNSA.