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When two options look similar on paper, which one actually fits your situation.

Heat Index vs Feels-Like Temperature

Heat index is a single standardized formula; feels-like is whatever your weather app vendor decided. Here is which one to use when.

Dry Heat vs Humid Heat

Why 100 F in Phoenix is different from 90 F in Houston, and which is more dangerous despite the lower number.

Heat Index vs Wet-Bulb Globe Temperature (WBGT)

Heat index for the general public, WBGT for athletes and outdoor workers. Why the two metrics give different recommendations.