Atmo Nouvelle-Aquitaine has unveiled new resources to enhance access to air quality data: the 2025 annual report, new departmental fact sheets, and an interactive atlas. These tools aim to inform the public about regional trends and local air pollution issues.
The 2025 annual report highlights a decrease in major pollutant concentrations over the past decade. Between 2016 and 2025, nitrogen dioxide (NO2) levels dropped by 35%, fine particulate matter (PM2.5) by 14%, coarse particulate matter (PM10) by 8%, and sulfur dioxide (SO2) by 9%. However, ozone remains a concern, with rising levels in recent years, particularly during hot summers. In 2025, the region experienced 14 days of pollution episodes. Monitoring relies on 44 regional measurement stations and modeling tools.
For the first time, 12 departmental fact sheets are available, one for each department in Nouvelle-Aquitaine. They simplify access to local data, including ten-year pollutant trends, concentration maps compared to 2024, the number of people exposed, pollution episodes, emissions by sector, and information on pollen, pesticides, and odors.
The interactive atlas allows users to explore modeling maps by geographic scale (region, department, commune), year, and pollutant. It helps visualize concentrations and identify exposed areas and populations, referencing regulatory values and WHO recommendations.
These three resources – the annual report, departmental fact sheets, and interactive atlas – serve complementary needs to provide reliable and understandable information on air quality in Nouvelle-Aquitaine.
