Air pollutant emissions in Switzerland have fallen sharply since 1980. Stricter emission limits in traffic and a limitation of the sulphur content in liquid fuels have led, for example, to a significant reduction in pollutants such as nitrogen oxides and sulphur oxides. Under the Geneva Convention on Long-Range Transboundary Air Pollution, Switzerland is obliged to draw up an annual inventory of air pollutant emissions. On behalf of the Federal Office for the Environment, INFRAS was involved as data supplier and co-author.

Compared to 2005, nitrogen oxide emissions in Switzerland fell by more than 30 percent in 2017. A total of around 63,000 tonnes were emitted in Switzerland, amongst others in road traffic. This is shown by the current air pollutant inventory. (Photo: Keystone-SDA)