How to Use the Indoor-Outdoor Temp Gap Layering Guide
This tool takes your indoor and outdoor temperature, calculates the gap between them, and recommends how many layers to wear. It's a quick answer when summer AC or winter heating creates a big difference between inside and outside.
Layering Guidelines by Temperature Gap
A gap of 27°F or more calls for 3-4 layers, 18-27°F needs 2-3 layers, and 9-18°F works with just 1-2 layers. Under 9°F, your usual outfit is fine as-is.
Health Tips for Big Temperature Gaps
Rapid temperature swings repeatedly constrict and dilate blood vessels, which can strain the body. Keeping an easy-to-remove piece like a cardigan or scarf on hand helps keep your body temperature steady as you move between indoors and outdoors.
Frequently Asked Questions
Rapid temperature swings repeatedly constrict and dilate blood vessels, straining the body and making colds or AC sickness more likely.
Indoors, wear a light cardigan or scarf so cold air doesn't hit you directly, and keep your neck and stomach warm.
A base layer against the skin, a knit or vest for warmth, and a wind-blocking outer piece makes it easy to add or remove layers.