RWIS Atmospheric / Surface Data Download
The IEM archives RWIS information for the network in Iowa based on a direct feed from the DOT. We also archive other states based on an archive provided by the MADIS project. Data for Iowa dates back to 1995, whereas we only have data for other states back to 2009. The archive has some holes in it around the year 2000 and 2001, but it mostly in tack outside of those dates.
Data is available from the following states: Alaska, Colorado, Indiana, Iowa, Kansas, Kentucky, Minnesota, Nebraska, North Dakota, Nevada, New Hampshire, Ohio, Virginia, West Virginia, Wisconsin, and Wyoming.