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.

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POLLENS VIGILANCE MAP

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

POLLENS VIGILANCE MAP
  • Allergy risk:
  • nul
  • very low
  • low
  • moderate
  • high
  • very high

Vigilance map, updated 20th of September

The risk of allergy related to ragweed pollens will still be high in Nièvre, Nord Isère, Ardèche and Drôme. It will be moderate in Ain, Rhône and Loire. Some grains of ragweed are also present in the West of the country but with an allergy risk not exceeding the low level except in the Mareuil sector where the allergy risk may reach the moderate level.

Apart from ambrosia, the other pollens (grasses, nettles, plantains and mugwort) are present in very low concentrations and will not cause too much discomfort to allergic people with a very weak risk.

News

Modelling

Modelling in aerobiology makes pollination forecasts based on data of the previous years and on the weather forecasts of the days to come. These forecasts are not based on data recorded previous days/weeks. Modelling allows to get an overview of what to expect for the days to come, even if these forecasts are not 100% reliable. The following links are only for guidance.

Forecast of ragweed pollination

Follow the forecast of ragweed pollination in France thanks to COSMO-ART or SILAM projects.

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 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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