The Iowa Environmental Mesonet (IEM) collects environmental data from cooperating members with observing networks. The data are stored and made available on this website.

IEM Daily Feature

Windy April

Posted: 13 Apr 2021 05:42 AM, Views: 433
April is the windiest month on average for Iowa and this April is living up to that standard. The featured chart presents daily averaged wind speeds for Des Moines along with the vector averaged wind direction. The average wind direction tells the story of this month with dominate southerlies over the first week or so followed by more northerly component days. While not presented on this chart, that difference in direction is a strong indication of the difference in air temperature we have seen over these two periods. Breezy conditions are expected again today and on Wednesday.
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Previous Years' Features
Mount Vernon, IA Webcam:
News Items  

NEXRAD N0R Mosaic Change
Posted: 31 Mar 12:23 PM

30 March NWS Data Outage [resolved]
Posted: 30 Mar 05:43 AM

New KCRG Webcam: Mount Vernon
Posted: 29 Mar 08:58 AM

20 Mar NWS Data Outage [resolved]
Posted: 20 Mar 06:25 AM

IEM Network Metadata Changes
Posted: 05 Jan 08:45 AM

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Soil Temperatures

Data from the Iowa State Soil Moisture Network is found on this website and daily soil temperature averages are used to produce the highlighted analysis.


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.

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Current Data

The IEM combines data from participating networks into products like maps shown above and web applications to analyze the data.

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ISU Agronomy
IIHR - University of Iowa