Air Quality Index — Angers Loire Métropole

Air quality index for different municipalities of Angers Loire Métropole. Angers, Avrillé, Béhuard, Bouchemaine, Briollay, Cantenay-Epinard, Ecouflant, Ecuillé, Feneu, Le Plessis-Grammoire, Les Ponts-de-Cé, Longuenée-en-Anjou, Montreuil-Juigné, Mûrs-Erigné, Saint-Barthélemy-d’Anjou, Saint-Clément-la-Place, Sainte-Gemme-sur-Loire. * * * One index is composed of 4 sub-indices (also ranging from 1 to 10), each being representative of an air pollutant: * fine particles (PM10) * ozone (O3) * nitrogen dioxide (NO2) * sulphur dioxide (SO2) **The highest sub-index of the 4 presented will be the index of the day ** See values in the dataset about this: sub-index_polluant_name, sub-index_polluant, sub-index_index, sub-index_valuen sub-index_color The calculation of the index is defined at national level on the basis of regulatory thresholds. For more information, see [Order of 22 July 2004 on air quality indices](https://www.legifrance.gouv.fr/jorf/id/JORFTEXT000000625624/) The measurement sites selected for its calculation characterise the background air pollution of heavily populated (urban) or peri-urban (peri-urban) areas: for agglomerations with more than 100,000 inhabitants, this is the Atmo index