Four Corners Air
Mountain Studies Institute has collaborated with the International Biological Information System (IBIS) at Colorado State University to compile air quality information for the Four Corners onto one web page. The goal of 4 Corners Air is to integrate air quality data from federal, state, and/or local monitoring stations in order to simplify public access to the information.
The website includes real-time Air Quality Index (AQI) conditions as well as hourly historical AQI for the four Corners region of the United States. The AQI is an index for reporting daily air quality, measuring five major air pollutants regulated by the EPA under the Clean Air Act: ground-level ozone, particle pollution, carbon monoxide, sulfur dioxide, and nitrogen dioxide.