The Iowa Department of Transportation (DOT) manages the network of AWOS sensors in the state of Iowa. While 20 minute interval data is published to the world in real-time, they also collect one minute interval data internally. Each month, the DOT kindly provides us with the previous month's archive of one minute data. We process this data into our database and make the observations available here for download. Please don't make giant data requests through this interface, instead feel free to email Daryl (firstname.lastname@example.org) and make your request.
- Archive Begins: 1 Jan 1995 (for some sites, not all)
- Last Date in Archive: 01 Apr 2011