Climate Change Is Making Extreme Heat Worse

Here's what Earthjustice is doing about it.

A man wipes his brow as he walks under misters on July 13, 2023 in downtown Phoenix.
A man wipes his brow as he walks under misters on July 13, 2023 in downtown Phoenix. Arizona, Nevada, New Mexico and Southern California are getting hit with 100-degree-plus temps and excessive heat warnings. (Matt York / AP)

As global temperatures rise, the hottest temperatures — and the number of areas impacted by extreme heat — are also rising. That means more scorching hot days in more places.

In California’s Death Valley in July 2023, thermometers neared the hottest temperature ever recorded, hovering around 130 degrees. That same month, the average global temperature hit an all-time high.

It’s not just that individual hot days are breaking records — there’s an overall warming trend. Take the Texas cities of Austin and Houston, for example. Over the past 50 years, Austin has seen the number of days with temperatures above 100°F increase by one month, while Houston has recorded an additional month with temperatures above 95°F. In California, temperatures are estimated to have increased 3°F in the past century.

Through 2100, scientists predict hotter temperatures and more frequent and intense heat waves in every region of the U.S., according to the Union of Concerned Scientists. And the trend transcends borders.

Extreme heat increases demand for air conditioning, fueling carbon pollution and putting a strain our energy system that can lead to blackouts. It also poses a serious health threat, especially for the most vulnerable.

Why is this happening?

Human activity is causing rapid changes to our global climate that are contributing to extreme weather conditions.

When fossil fuels are burned for electricity, heat, and transportation, carbon dioxide, a greenhouse gas that traps solar radiation, is released into our atmosphere.

Over the past century, massive increases in carbon dioxide, methane, and other greenhouse gas emissions have caused the temperature on our planet to rise. That spike in global temperatures is fueling climate disasters that will only get worse unless we take action. Experts warn that we are running out of time to dramatically cut pollution to avoid climate catastrophe.

What is Earthjustice doing to help?

Americans across the political spectrum are feeling the urgency of our climate deadline and calling for action on a scale that matches the threat. We need bold and equitable climate solutions to move towards a pollution-free, 100% clean energy future.

Our attorneys use the law and partner with communities on the frontlines to tackle the climate crisis. Here are a few examples of the goals we’re working on and the progress we’ve achieved:

  • Move beyond fossil fuels. Earthjustice has secured the retirement of coal plants generating more than 65,000 megawatts a year and stopped the buildout of more than 8,500 megawatts of methane gas. This work has prevented $16.9 billion a year in climate-related costs.

This fight to preserve a livable planet touches everyone. Together, we can drive transformative change in service of the earth and justice for its people.

Learn more about how climate change is fueling extreme weather.