The AirData website gives you access to air quality data collected at outdoor monitors across the United States, Puerto Rico, and the U. S. Virgin Islands. The data comes primarily from the AQS (Air Quality System) database. You can choose from several ways of looking at the data: download data into a file, output the data into one of AirData's standard reports, create graphical displays using one of the visualization tools, and investigate monitor locations using an interactive map