Image of two firefighters working to create a fire break as a wildfire looms in the background.
Climate

Fire and Smoke: How Climate Change Fuels Wildfires

Wildfires are becoming more common and intense, and human-caused climate change is a big reason why. Here’s a simple explanation of how climate change fuels wildfires.

🔥 Why Are Wildfires Getting Worse?

As the Earth’s climate warms, certain areas experience hotter, drier conditions and thirstier air. This dries out trees, plants, and grass, making them more likely to catch fire. When a fire starts—due to lightning, human activity, or other causes—it can spread quickly and become harder to control. In fact, fire seasons are lasting longer and happening more often than they used to.

Image: number of wildfires and the amount of land burned by wildfires in the U.S. from 1983 through 2024. The amount of land area burned each year has increased as wildfires have grown larger, while the number of fires each year has remained about the same. Credit: NASA

Wildfires and Climate Change: A Two-Way Street

Wildfires aren’t just caused by climate change—they can make it worse, too. When trees and plants burn, they release carbon dioxide (CO₂) into the air. CO₂ is a greenhouse gas that traps heat and warms up the planet. In 2023, huge fires in Canada released around 640 million tons of carbon, which added even more heat to our already warming world.

Image: Carbon Monoxide from Canadian wildfires in 2023. Credit: NASA

🛰️ How NASA Helps

NASA satellites watch over our planet day in and day out. Some of NASA’s satellites to monitor wildfires from space. These satellites can spot where these fires are happening, how big they are, and how much smoke they’re making. This helps scientists see patterns in how fires behave. It also gives important information to firefighters and emergency teams so they can respond faster and be better prepared.

What Can We Do?

It’s really important to understand how climate change and wildfires are connected. If we cut down on pollution from greenhouse gases and take better care of our forests, we can help make wildfires less dangerous. It’s a big problem around the world, but with science and teamwork, we can build a safer future for us, our children, and our grandchildren.

Get more of your climate smarts here!

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