Trapped in the Heartland due to Heatwave

Save me Martha (and the Vandellas)! As temperatures soar into the triple digits here in the "Heartland" I am having difficulty getting back to civilization because I'm travelling with a dog. The airlines won't fly from or through an airport where the temperature is above 85 degrees Fahrenheit (or below 40). I am starting in DSM (Des Moines, IA). I couldn't get out today--hopefully I'l be able to get out via ORD (Chicago O'Hare) tomorrow. The only other cities American seems to fly directly to are are MSP (Minneapolis-ST. Paul which has a pet travel embargo from July 15-19) and St. Louis, MO.
Wish me luck!!