WHO/Europe reviews scientific evidence on the health effects of air pollution and provides evidence-based guidance to policy-makers on how to protect public health. It also helps countries build capacity to assess health risks from air pollution and develop sustainable policies on air quality.

Activities range from developing methods to quantify health risks to supporting the implementation of international legal instruments such as the Convention on Long-range Transboundary Air Pollution, coordinating major international projects on air pollution and health, and providing guidance and technical support to the regular update of the WHO Air Quality Guidelines (AQGs), used as a reference tool to help decision-makers across the world in setting standards and goals for air quality management.