Pollen Count & Forecast for Marseille

Marseille’s spring (February-May) is dominated by Cypress and Plane pollen; Mediterranean Cypress (Cupressus sempervirens) is common in the Massif de l’Étoile and Parc Pastré; London Plane (Platanus x acerifolia) lines streets near the Old Port. Olive (Olea europaea) blooms across the Calanques. Summer (May-August) has high Pellitory-of-the-wall (Parietaria judaica) levels; the weed grows on limestone cliffs and city walls. Grasses (Poaceae) are found in Parc Borély.

Mistral winds carry pollen from the Rhône Valley; limestone massifs trap particles within the city basin. Autumn and winter have high Mould (Alternaria, Cladosporium) spore counts; Mediterranean humidity and decaying leaf litter in Marseilleveyre drive levels.