These maps show how air temperatures changed in the United States over the course of one October day, from 8 am to 5 pm. Monarchs can not fly until their flight muscles are 55°F. As a general rule, they need air temperatures of at least 50°F on a sunny day or 60°F on a cloudy day.

• Describe where and when is it too cold to fly on this October day. Assume there were no clouds.

• What's happening right now?
  Link to the live air temperature map for the United States. Where is the air temperature warm enough for monarchs to fly right now?