Press release 03/2016 from 29.01.2016 | Last changed: 23.01.2017
… Higher ozone levels for the first time in years; much lower particulate levels than 2014 Diesel engines in road traffic are a major source of nitrogen dioxide Source: … with high levels of nitrogen dioxide air pollution. As in previous years, the limit value of 40 µg/m³ (micrograms/cubic metre) as annual average was exceeded at about … some of the lowest levels of pollution. The EU daily limit value (PM10 daily limit values may not exceed 50 μg/m³ more than 35 times per year) was exceeded at only two …