Despite some improvements, current levels of air pollution still pose a considerable risk to the environment and to human health in the WHO European Region. One issue of concern is that monitoring of particulate matter is very limited in the countries of eastern Europe, the Caucasus and central Asia. This paper summarizes the evidence about the health effects of air pollution from particulate matter and presents the policy implications, the aim being to stimulate policy-makers to develop more effective strategies to reduce air pollution and its health effects in those countries.