The ultimate goal of the Pima County air quality control program is to reduce the concentration of harmful air contaminants in ambient air to safe and healthy levels, and to maintain those levels. A key process in controlling air pollution is to define the nature and extent of air quality problems within a geographical area through monitoring. Ambient air monitoring in Pima County has been conducted by the Pima County Department of Environmental Quality (PDEQ) and its predecessors since the 1960's. Over time, various air pollution monitoring and research programs have been established and revised to meet changing federal regulations and local needs.
Currently, the Pima County monitoring network is being operated by the Monitoring division of PDEQ. The Environmental Protection Agency has delegated authority to PDEQ to operate the portion of the State or Local Air Monitoring Stations (SLAMS) located in Pima County. In addition to SLAMS, Special Purpose Monitoring Stations (SPMS) are operated to accomplish various objectives. PDEQ also generates an Air Quality Index (AQI) report every hour on this web site for public notification of current air quality conditions.
As part of its role in the community, PDEQ offers educational, regulatory and professional groups tours of its air quality monitoring facilities. Our highly trained staff can explain various aspects of air quality monitoring to these groups. Many schools, including the University of Arizona, utilize these tours in their curriculum. Please call our Community Outreach Contact, at (520) 724-7400 if you would like more information on this service.