This table shows the variables reported from the various IEM networks. As you can see, no network reports everything, but the combination of all of these networks collects everything. This is the motivation behind the IEM.

Variable: IEM Network:
ASOS AWOS CoCoRaHS COOP DCP ISU Soil Moisture NLAE Flux RWIS SCAN
Air Temperature XX XSome XXXX
Humidity XX  Some XXXX
Wind Speed/Direction XX  Some XXXX
Air Pressure XX     X X
Precipitation XXXXSome XXSomeX
Solar Radiation       XX X
Visibility XX        
Clouds Heights/Coverage XX        
Soil Temperature       X  X
Soil Moisture       X X
Snowfall/Snow Depth Few XX      
River Stage      Some    

Legend:

X == Network reports this variable
Few == Very few stations report this variable
Some == Some sites report this variable, not all
(blank) == No sites report this variable