Article category

Weather & Climate

Editor-approved research and reporting with source-linked claims, visible caveats, and clear editorial notes.

Published ledger

1 article

The Heat Index Is Topping 100. The Number That Matters Is Not Just the Temperature

A widespread heat wave is producing heat-index values above 100 in parts of the central and southern United States. The heat index combines temperature and humidity, but local alerts, overnight cooling and individual exposure determine actual risk.

Jul 30, 2026Read →