Air quality in the period 2010–12 continued to deteriorate in Italy, with levels of particulate matter (PM10), nitrogen dioxide and carbon monoxide on the rise, especially in the industrial north and centre of the country along with the island of Sicily, and Campania (the region around Naples), according to the “Urban Environmental Quality” report, issued on 11 October by the Institute for Environmental Protection and Research (ISPRA).
One bright spot was a reduction in vehicle traffic in six of the eight largest cities, though it rose in the two biggest – Rome and Milan. ISPRA said the four largest cities, including Turin and Naples as well as Rome and Milan, still had too much car traffic for their populations.
Source: Car Lines No. 5, October 2013