High-altitude baking

Oven Temperature and Baking time
As you increase the altitude at which you are baking, increase the oven temperature by 15 to 25 degrees, and baking time by 5 minutes.

Taking a room's Temperature
A room thermometer indicates when your kitchen is hot or cool, so you can adjust the temperature of your ingredients appropriately. If your kitchen is warmer than usual on a bread-baking day, you can use slightly cooler water so that the rising times will stay the same. If you ware working with pastry or pie doughs, finding a cooler are in which to work or chilling your equipment is helpful.