- Another week of blistering heat will bring increased health risks, with many U.S. cities expected to break overnight temperature records.
- Health experts warn that high overnight temperatures are more dangerous than daytime heat because they prevent the body from cooling down and recovering.
- More than 90 temperature records across the U.S. are predicted to be tied or broken this week, with most being overnight heat records.
- Overnight temperatures are forecast to remain above 80°F in several southern cities and above 70°F in parts of the Midwest and Northeast.