The Iowa Environmental Mesonet (IEM) collects environmental data from cooperating members with observing networks. The data are stored and made available on this website.
Plotting Library Update
Posted: 18 Jan 01:50 PM
August COOP Data Uploaded
Posted: 23 Dec 08:26 PM
13 Dec METAR Data Outage
Posted: 13 Dec 03:35 PM
Wind Chill Percentile Maps
Posted: 12 Dec 09:53 AM
July COOP Data Uploaded
Posted: 09 Dec 02:46 PM
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The IEM processes National Weather Service NEXRAD information in real-time to produce and archive many products. This includes a generated composite produced every five minutes dating back to 1995!
Besides point observations of precipitation, the IEM also processes gridded rainfall products made available by NOAA. This information is archived and made available in GIS ready formats.