Air quality guidelines for Europe

Abstract

The first edition of the WHO Air quality guidelines for Europe was published in 1987. Since then new data have emerged and new developments in risk assessment methodology have taken place, necessitating the revision of the existing guidelines. The Bilthoven Division of the WHO European Centre for Environment and Health undertook this process in close cooperation with the International Programme on Chemical Safety and the European Commission. It is the aim of these guidelines to provide a basis for protecting public health from adverse effects of air pollutants and to eliminate or reduce exposure to those pollutants that are known or likely to be hazardous to human health. The guidelines are intended to provide background information and guidance to (‎inter)‎national and local authorities in making risk assessment and risk management decisions. In establishing pollutant levels below which exposure – for life or for a given period of time – does not constitute a significant public health risk, the guidelines provide a basis for setting standards or limit values for air pollutants. This publication includes an introduction on the nature of the guidelines and the methodology used to establish guideline values for a number of air pollutants. It describes the various aspects that need to be considered by national or local authorities when guidelines are transformed into legally binding standards. For the pollutants addressed, the sections on “Health risk evaluation” and “Guidelines” describe the most relevant considerations that have led to the recommended guideline values.