Grand Est: Artificial intelligence to anticipate pollen peaks and relieve your symptoms
"Faced with the lengthening of pollen seasons and the increase in concentrations of allergenic pollens," Jean-François Husson , president of AtMO Grand Est, immediately emphasizes, "our mission is more than ever to inform and protect the inhabitants of the Grand Est."
Its 2024 report illustrates "the importance of enhanced surveillance and innovative tools, such as the national pollen index, to anticipate risks and support public health policies." Making the invisible visible is the motto of AtMO Grand Est, which works for "atmospheric quality through a cross-cutting air-climate-energy and health approach."
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An expert observatory, this accredited non-profit association monitors air quality in the region. Due to its geographical location, it also maintains close contacts with Belgium, Luxembourg, Germany, and Switzerland for even more reliable and qualified data. In figures, AtMO Grand Est—85 employees spread across four agencies (Strasbourg, Reims, Nancy, Metz)—tracks 31 different pollutants using its 184 analyzers, 71 fixed stations, and 14 mobile stations.
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"In 2024, exceptional weather conditions – including a very mild winter, the third warmest ever recorded in France – caused an early flowering of allergenic species, leading to record pollen concentrations, particularly of hazel, alder, birch, and grasses," reveals the report, which is based on a unique network of seven sensors in the Grand Est region, with "no fewer than 368 citizen sentinels as well as three-day modeling and forecasting tools."
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The year 2024 confirmed recent trends of "lengthening and intensifying pollen seasons, exacerbated by climate change." Since April 2025, a national pollen index has even been made available to the general public. Based on artificial intelligence, it predicts the concentration of six major allergenic species (including grasses, ragweed, birch, etc.) up to D+2 at the level of each municipality. "This new tool represents a major step forward in anticipating symptoms, adapting treatments, and guiding health and development policies," claims AtMo Grand Est.
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