Le Réseau National de Surveillance Aérobiologique (R.N.S.A.)

is the French aerobiology network in charge of the analysis of the content of the air in biological particles, and to give some information about their health impact. This activity began in 1985 to the Pasteur Institute. It is a private association "RNSA" since 1996.

RNSA collect pollen and moulds in the air, and clinical data, from 70 towns in France. In each great town, RNSA has a pollen trap (Burkard or Lanzoni), an analyst and a clinician. RNSA has nearly 65 pollen traps located on a central urban position over the roof of building, to be representative of the trend air quality.



Select a county on the map or in the list below :

  • Allergy risk:
  • nul
  • low
  • moderate
  • high

Pollen allergy risk map, updated 17th of March

From the south-west to the south-east of the country, Cupressaceae-Taxaceae pollens (cypress...) will be very present in the air and will bother allergy sufferers with moderate concentrations and a high level of allergy risk. 

While waiting for the arrival of birch pollens at the end of the month, allergy sufferers will still have to be wary of alder pollens which will be responsible for a low or medium level of allergy risk. Hazel pollens flowering is ending with an allergy risk that will not exceed the low level. 

Ash, hornbeam, elm, willow and poplar pollens are also present with a low risk of allergy but which could increase if temperatures remain high. The first grass pollens are arriving from the south-west of the country but with a risk that will remain low. Parietaria pollens (urticaceae) may bother allergy sufferers on the Mediterranean area with a low to medium risk.

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Starting dates of birch pollination, in partnership with Météo-France (updated on March 17)

Find below the forecasts for the beginning of the pollination of birch trees. These forecasts will be updated regularly.

Montluçon: March 26th
Paris: March 26th
Lyon: March 27th
Amiens: March 31st
Rouen: April 1st


Pollen information in real time on the Paris region (information published on March 8th)

Cupressaceae pollens are very abundant in Paris region but they will only bother the most sensitive people. It is alder pollens that are responsible for most of the allergy symptoms currently.


Smartphone Apps

- The Alerte pollens app will help you to live your allergy without staying at home! Consult the RNSA pollen alerts, advices to handle your allergy day by day and services like weather forecast or air quality. You can configure up to 5 pollens and 5 departments. You can also activate the geolocation which will help to automatically display informations about the area you travel. Available on Play store and Apple store.

- The Ma vie d'Allergik app will follow you day after day in the follow-up of your respiratory allergy. The main features are personalized follow-up, reminders and notifications, availability of pollen data and the ability to meet daily challenges. You will also find practical information, tips and advice, etc...
The app is available on Google Play and the Appstore. For more informations: Ma vie d'AllergiK

- The Pollen app, now available for France, provide a personnal pollen forecast for the 3 days to come in your area, taking into account your informations from the pollen diary and calculate your personnal level of exposure. Symptôms of allergy can be recorded and compared with the pollination in the pollen diary. Available on Google Play et l'App Store.

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