Dangerous heat and humidity are affecting more than 90 million people across the United States, with alerts in place from California to Kentucky. Southern California is experiencing temperatures significantly above average, compounded by unusually high humidity.
In Los Angeles, the heat index is forecast to reach 113 degrees Wednesday, with San Diego expected to see 102 degrees and Indio, California, reaching 116 degrees. Extreme heat warnings have been issued for areas stretching from San Diego to Las Vegas and Phoenix, while heat advisories cover much of California.
The extreme heat is also pushing eastward into the central United States. By Wednesday, the heat index is projected to hit 106 degrees in Dallas and Little Rock, Arkansas. Oklahoma City is expected to reach 105 degrees, Memphis, Tennessee, 104 degrees, and Louisville, Kentucky, 102 degrees.
While some cities like Oklahoma City may see a slight reprieve on Thursday, the high temperatures and humidity are anticipated to return for the weekend. Cooler air is expected to arrive in Northern and Southern California by Saturday, with temperatures forecast to drop into the high 80s.
