Roadway Weather Information System

The Iowa Department of Transportation maintains a set of observing stations located along major roads in the state. These stations measure pavement temperatures as well as atmospherics. The DOT has a good website called WeatherView, which contains recent obs and a wealth of other information. The products on this page are intended to supplement their site.
RWIS Network
About 6 obs per hour
Stations: 62
Locations

Roadside Webcams Webcam Archive Viewer

Available sites:

Current Conditions

Time Series Plots:

Plots with RWIS data

Raw Text Files for Iowa RWIS

These are the raw text files provided by the Iowa DOT without any IEM manipulation.

Station Plot with NEXRAD