ARI - Aggregated Risk Index
The Aggregate Risk Index (ARI) is an index that describes the health risk increase due to the short term exposure to air pollution. It is derived by additively summing the product pollutant concentration weighted using the Relative Risk factors of increased mortality due to all causes, provided by the World Health Organization ( WHO-Air Quality Guidelines). This product is subsequently normalized on a scale that associates a risk increase of 16% to a ARI of level 4. The value displayed on the platform represents the geographical mean and maxima values of the daily average ARI for each Local Administrative Unit (LAU). Each ARI level is associated to specific reccomendations, available here: Health advices