Air Resources Information System (ARIS)

The Air Resources Information System (ARIS) provides information on parks and wilderness areas managed by the National Park Service (NPS) and the U.S. Fish and Wildlife Service (FWS) as well as Inventory & Monitoring (I & M) networks. ARIS identifies air quality related values for Class I air quality areas and provides guidance on analysis for evaluating impacts to air quality related values. ARIS maintains information for 48 NPS Class I areas and 21 FWS Class I areas. In addition, ARIS provides air quality information for 32 Vital Signs I & M Networks that contain national parks with significant natural resources.

Please also visit the National Park website for similar ARIS air quality information for areas maintained by the National Park Service.

To access the ARIS information on this page. You may 1) select a Fish and Wildlife Service Class I refuge from the drop-down lists, or 2) click on a FWS Class I unit from the map or 3) select a wilderness area or national wildlife refuge (NWR) from the alphabetical list by state below.

Alphabetical Listing by State of Class I Wildlife Refuges