Údaje o kvalitě ovzduší poskytl: the Atmo Auvergne (atmoauvergne.asso.fr)
Note that the measurements for PM2.5 (fine particulate matter), PM10 (respirable particulate matter), O3 (ozone) and NO2 (nitrogen dioxide) are taken from the station: Paray-le-Fresil (03), Rurale, Auvergne