Quality index of air and indicator of sustainability (*) by areas of the Basque country. 2024

Departamento de Medio Ambiente, Planificación Territorial y Vivienda

	Very good	Good	Improvable	Bad	Very bad	Indicator of sustainability (%)
Encartaciones - Alto Nervion	244	103	15	4	0	94.81
Bajo Nervion	94	224	37	11	0	86.89
Costa	228	137	1	0	0	99.73
Donostialdea	117	207	38	4	0	88.52
Alto Ibaizabal - Alto Deba	136	199	27	4	0	91.53
Goierri	190	151	18	7	0	93.17
Llanada Alavesa	213	131	18	4	0	93.99
País Vasco Ribera	285	75	3	3	0	98.36
No. of days in the area according to air quality	1,507	1,227	157	37	0	93.37
% of days according to the quality of the air	0.51	0.42	0.05	0.01	0

(*)Indicator of sustainability = Percentage of (Nº days with 'Very good' rating + Nº days with grade "Good") / total number of days of the year

The daily value assigned to each area will be the worst value observed for the seasons of that area

Date September 2, 2025

Source: Department of Industry, Energy Transition and Sustainability. Air quality statistics

Product data

Quality index of air and indicator of sustainability (*) by areas of the Basque country. 2024

Body responsible :: Departamento de Medio Ambiente, Planificación Territorial y Vivienda
Other bodies :: Euskal Estatistika Erakundea/Instituto Vasco de Estadística

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Data