# Scorching US heat wave to affect 70 million with third heat dome in a month

A severe heat wave is forecast to affect 70 million people across the US, marking the third 'heat dome' in a single month. The prolonged extreme temperatures raise risks of heat-related illnesses and strain on power grids, underscoring the ongoing effects of climate change.

**Importance:** 4/5

## Sources

### World
- [The Guardian World](https://www.theguardian.com/us-news/2026/jul/25/scorching-us-heat-wave) — Sat, 25 Jul 2026 18:34:53 GMT