Данные о качестве воздуха предоставлены: the La Surveillance de l’Air en Limousin (limair.asso.fr)
Note that the measurements for PM2.5 (fine particulate matter), PM10 (respirable particulate matter), O3 (ozone), NO2 (nitrogen dioxide) and SO2 (sulfur dioxide) are taken from the station: Présidial, Limoges