You could try misting them with water and keep the fan on them even if they don't like the sound. Mist them a few times an hour. When water evaporates, it keeps things cool. If there is an alternative place to take them, like a basement or garage that is even a few degrees cooler, that would help. Keep ice in their water, offer them cold fruit like watermelon, cut grapes, anything cold that will cool their internal temps down.
Adult quail can adjust their internal body temps, babies have not yet learned how to do so. So you have to do it for them. Good luck in all that heat.