Levels of air pollutants prescribed by regulations that may not be exceeded during a specified time in a defined area. (Source: Glossary of Environment Statistics, Studies in Methods, Series F, No. 67, United Nations, New York, 1997)
Multilateral environment agreements tagged with air quality standard
You can see below a list of multilateral environment agreements. Use the links on the right to view the content tagged with air quality standard. This includes official treaty texts, decisions, recommendations, and other related informational documents such as publications, annuals, meetings, documents or reports.