Article 3 1

1.   By 31 December 2030 and every 5 years thereafter, and more often if substantial new scientific findings, such as revised WHO Air Quality Guidelines, point to the need for it, the Commission shall review the scientific evidence related to air pollutants and their effects on human health and the environment relevant to achieving the objectives set out in Article 1 and present a report with the main findings to the European Parliament and to the Council.