TY - JOUR T1 - Clean air in Europe: beyond the horizon? JF - European Respiratory Journal JO - Eur Respir J SP - 7 LP - 10 DO - 10.1183/09031936.00186114 VL - 45 IS - 1 AU - Bert Brunekreef AU - Nino Künzli AU - Juha Pekkanen AU - Isabella Annesi-Maesano AU - Bertil Forsberg AU - Torben Sigsgaard AU - Menno Keuken AU - Francesco Forastiere AU - Maeve Barry AU - Xavier Querol AU - Roy M. Harrison Y1 - 2015/01/01 UR - http://erj.ersjournals.com/content/45/1/7.abstract N2 - When the European Union (EU) set its first Air Quality Limit Values for particulate matter in outdoor air (particulate matter <10 μm in diameter (PM10)) back in 1999, it promised to set a much stricter limit by 2010 [1]. The goal at the time was for an annual limit value of 20 µg·m−3, equivalent to the World Health Organization (WHO) Air Quality Guideline set in 2005 [2]. When it was time to do so, however, the new directive adopted in 2008 had no trace of it, and essentially preserved the limit values set in 1999, to which a rather unambitious limit value for fine particles (PM2.5) was added [3]. The limit value for PM2.5 is an annual average of 25 µg·m−3, to be reached by the year 2015: 2.5 times higher than the WHO guideline value (10 µg·m−3), based on the science available already in 2005 [2], and twice the current standard of 12 µg·m−3 in the USA. The 2008 directive, however, did introduce a voluntary exposure reduction scheme aiming for much lower levels of urban PM2.5 up to 2020, with the intention of being made mandatory by 2013. In December 2013, at the end of the EU Year of Air, the Commission finally presented its new policy plan. This does not revise the limit values in the Air Quality Directive and does not make mandatory the voluntary exposure reduction targets, but now proposes introducing a medium-size combustion plant emissions directive and further reductions of the so-called National Emission Ceilings [4–6]. These reductions (as we will show here) are rather unambitious until 2020, but call for much stronger reductions in 2030, i.e. well over the horizon. The current EU limit values for PM2.5 and PM10 are far too high http://ow.ly/E6HUR ER -