A dangerous heat dome will bring record-breaking temperatures to the eastern US starting this weekend. Millions from the Midwest to the East Coast face a level 4 extreme heat risk through at least Thursday. Highs will be 15 degrees above normal, potentially reaching 110 degrees with humidity. Over 250 daily temperature records could be broken, highlighting the deadly nature of extreme heat, especially with warmer nighttime temperatures hindering body cooling. This early heatwave is a preview of potentially hotter temperatures to come in July and August.

Prepared by Olivia Bennett and reviewed by editorial team.