![Matias Delacroix FILE - A child covers his head with a bucket on a hot day in the Los Guandules neighborhood of Santo Domingo, Dominican Republic, Monday, May 20, 2024. (AP Photo/Matias Delacroix, File)](https://mapi.associatedpress.com/v2/items/021caaded0fa42ce9b48483e8729d40a/preview/preview.jpg?s=680x)
FILE - A child covers his head with a bucket on a hot day in the Los Guandules neighborhood of Santo Domingo, Dominican Republic, Monday, May 20, 2024. (AP Photo/Matias Delacroix, File)
![Jason Fochtman FILE - Daniel Valdez places a fresh bag of ice in a cooler he brought on foot from his apartment as volunteers at the Memorial Assistance Ministries distribute water and ice, Saturday, May 18, 2024, in Houston. Extreme heat in Mexico, Central America and parts of the U.S. South has left millions of people sweltering, strained energy grids and resulted in iconic Howler monkeys in Mexico dropping dead from trees. (Jason Fochtman/Houston Chronicle via AP, File)](https://mapi.associatedpress.com/v2/items/b7415c47fa5447f490b9df9cfc80ac77/preview/preview.jpg?s=680x)
FILE - Daniel Valdez places a fresh bag of ice in a cooler he brought on foot from his apartment as volunteers at the Memorial Assistance Ministries distribute water and ice, Saturday, May 18, 2024, in Houston. Extreme heat in Mexico, Central America and parts of the U.S. South has left millions of people sweltering, strained energy grids and resulted in iconic Howler monkeys in Mexico dropping dead from trees. (Jason Fochtman/Houston Chronicle via AP, File)
![Melissa Phillip FILE - Transmission power lines are down near the Grand Parkway and West Road after a storm May 16, 2024, in Cypress, Texas. Extreme heat in Mexico, Central America and parts of the U.S. South has left millions of people sweltering, strained energy grids and resulted in iconic Howler monkeys in Mexico dropping dead from trees. (Melissa Phillip/Houston Chronicle via AP, File)](https://mapi.associatedpress.com/v2/items/65b31d1dd9954519a4ba40ef53115041/preview/preview.jpg?s=680x)
FILE - Transmission power lines are down near the Grand Parkway and West Road after a storm May 16, 2024, in Cypress, Texas. Extreme heat in Mexico, Central America and parts of the U.S. South has left millions of people sweltering, strained energy grids and resulted in iconic Howler monkeys in Mexico dropping dead from trees. (Melissa Phillip/Houston Chronicle via AP, File)
![Marco Ugarte The sun rises amid high temperatures in Mexico City, Thursday, May 23, 2024. Extreme heat in Mexico, Central America and parts of the U.S. South has left millions of people in sweltering temperatures, strained energy grids and resulted in iconic Howler monkeys in Mexico dropping dead from trees. (AP Photo/Marco Ugarte)](https://mapi.associatedpress.com/v2/items/2ba1b02e4cc147648603fda994eb10ee/preview/preview.jpg?s=680x)
The sun rises amid high temperatures in Mexico City, Thursday, May 23, 2024. Extreme heat in Mexico, Central America and parts of the U.S. South has left millions of people in sweltering temperatures, strained energy grids and resulted in iconic Howler monkeys in Mexico dropping dead from trees. (AP Photo/Marco Ugarte)
![Luis Sanchez FILE - A veterinarian feeds a young howler monkey rescued amid extremely high temperatures in Tecolutilla, Tabasco state, Mexico, May 21, 2024. Extreme heat in Mexico, Central America and parts of the U.S. South has left millions of people sweltering, strained energy grids and resulted in iconic Howler monkeys in Mexico dropping dead from trees. (AP Photo/Luis Sanchez, File)](https://mapi.associatedpress.com/v2/items/64511afe4f304165bc8234d71bf68073/preview/preview.jpg?s=680x)
FILE - A veterinarian feeds a young howler monkey rescued amid extremely high temperatures in Tecolutilla, Tabasco state, Mexico, May 21, 2024. Extreme heat in Mexico, Central America and parts of the U.S. South has left millions of people sweltering, strained energy grids and resulted in iconic Howler monkeys in Mexico dropping dead from trees. (AP Photo/Luis Sanchez, File)