Air quality index and Sustainability indicator (*) by areas of the Basque Country.

The Air Quality Statistics collects the percentage of days with good or permissible air quality, by municipalities, by studying the presence in the air of materials or forms of energy that involve risk, damage or serious discomfort to people and goods of any nature. More information on the https://www.euskadi.eus/web01-s2ekono/es/contenidos/informacion/estatistika_ing_090203/es_def/index.shtml departmental statistical portal.