Pollen Forecast Paris — September 10, 2026
Live pollen levels for hay fever and allergy sufferers in Paris, France
Today's Pollen Levels in Paris
Today's Forecast Conditions
Pollen levels in Paris are at the lower end of the moderate range today, September 10, 2026. Sensitive individuals may begin to experience mild symptoms.
Consider taking antihistamines before heading outside if you are sensitive to the active pollen type. Morning and evening are generally better than midday for outdoor activity. Keep car and home windows partly closed on dry, breezy days.
7-Day Pollen Forecast for Paris
Pollen Season in Paris
Paris and the Île-de-France basin experience a broad pollen season driven by the Seine valley's woodland, the Bois de Boulogne and Bois de Vincennes, and the wheat and rapeseed fields of the surrounding Beauce plateau. Cypress and hazel begin the season in February, followed by alder and birch through March and April. Grass pollen from the extensive Paris Basin farmland dominates May and June, with counts frequently reaching High or Very High on warm, dry days. Plane trees lining Haussmann boulevards also contribute hairs and pollen that irritate eyes and airways. August brings mugwort and ragweed — ragweed is increasingly spreading northward from the Rhône valley and now reaches the Paris region. Around 20% of Parisians are affected by seasonal allergic rhinitis, particularly during the May grass pollen peak.
- Plane tree hairs in March and April can mimic pollen allergy — if symptoms start unusually early, this may be the cause.
- The Bois de Boulogne and Bois de Vincennes should be avoided during peak birch and grass season on dry afternoons.
- Watch for ragweed updates in August — its presence in Paris has grown significantly over the past decade.
Frequently Asked Questions
What is the pollen count in Paris today?
Today, September 10, 2026, the dominant pollen in Paris is Mugwort at Moderate levels. The maximum recorded value is 18.6 grains/m³. PollenPal updates this data daily.
When is hay fever season in Paris?
The main hay fever season in Paris runs from April to June. Tree pollens (birch, alder) typically start the season, followed by grass pollen which is the most common allergen trigger. Mugwort and other weeds can extend symptoms into late summer.
What pollen is high in Paris right now?
As of September 10, 2026, the highest pollen type in Paris is Mugwort (Moderate). You can track all four pollen types — birch, grass, alder, and mugwort — on this page, updated every day.
Is birch pollen high in Paris today?
Birch pollen in Paris today (September 10, 2026) is at Low levels (0.0 grains/m³). Birch season in Paris typically peaks in spring. For personalised birch pollen alerts, download the PollenPal app.
How do I reduce hay fever symptoms in Paris?
To reduce hay fever symptoms in Paris: check the daily pollen forecast and take antihistamines before heading outside on high-count days. Wear wrap-around sunglasses, shower after spending time outdoors, and keep windows closed during peak hours (11:00–16:00). The PollenPal app provides hourly pollen forecasts and personalised alerts for Paris and other European cities.