Federal Office for the Environment FOEN

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Air indicators

Clean air is a basic requirement of human health and an intact environment. Air quality has improved over the past 25 years. Nonetheless, the limit values for particulate matter, ozone and nitrogen dioxide continue to be exceeded greatly in some cases, with adverse impacts on human health. Excessive acid and nitrogen deposition is continuing to place severe pressure on ecosystems. Further action to improve air quality is therefore essential.

* = Core indicator

Contact: info@bafu.admin.ch
Last updated on: 14.07.2011

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