Roadway Weather Information System
The IEM curates an archive of RWIS information. The Iowa data has been
provided by the Iowa DOT through a long standing partnership since the founding
of the IEM. Data for other states is provided via the
NOAA MADIS system.
Roadside Webcams RWIS Archive Viewer IEM Webcam Viewer




Current Conditions
- Atmospherics
- Pavement
- Soil Probes
- Traffic Data
- IEM Freeze
- Combine air and pavement temperatures with current RADAR.