It is likely to get more extreme. This year, a powerful El Niño developing in the Pacific Ocean is poised to unleash additional heat into the atmosphere, fueling yet more severe weather around the globe.

“We are going to see stuff happen this year around Earth that we have not seen in modern history,” Mr. Berardelli said.

And yet even as storms, fires and floods become increasingly frequent, climate change lives on the periphery for most voters. In a nation focused on inflation, political scandals and celebrity feuds, just 8 percent of Americans identified global warming as the most important issue facing the country, according to a recent NPR/PBS NewsHour/Marist poll.

As climate disasters become more commonplace, they may be losing their shock value. A 2019 study concluded that people learn to accept extreme weather as normal in as little as two years.

“This is not just a complicated issue, but it’s competing for attention in a dynamic, uncertain, complicated world,” said Anthony Leiserowitz, director of the Yale Program on Climate Change Communication.

Lilian Lovas, a 77-year-old lifelong Chicagoan, said she has seen climate change affect her hometown, but that she avoids the news in order to stay positive.

“It used to get so cold here in the winter but now we only get a couple real bitter days a year,” she said. “I vote and do my part but things are really out of my hands.”

Kristina Hengl, 51, a retail worker in Chicago, said she wasn’t so sure the weather extremes were anything that hadn’t happened before.

“I’m not a scientist so it’s hard for me to make a judgment call,” she said, before offering an inaccurate explanation. “Our planet has always had changes and this may be just the cycle of life. You have to consider that deserts used to have lakes, Lake Michigan wasn’t always a lake.”

In spite of the growing alarm among climate scientists, there are few signs of the kind of widespread societal change that would reduce the greenhouse gas emissions that are dangerously heating the planet.

“Even though storms and other extremes of the climate are happening, if they are at a distance, we just as soon pretend it doesn’t affect us, because we don’t want to do the things that are needed to deal with this threat,” said Paul Slovic, a professor at the University of Oregon who specializes in the psychology of risk and decision making.

“More and more people recognize climate change as a problem, but they don’t like the solutions,” Mr. Slovic added. “They don’t want to have to give up the comfort and conveniences that we get from using energy from the wrong sources, and so forth.”

Last Thursday, on what researchers say was the hottest day in modern history, a record number of commercial flights, each one emitting more planet-warming gasses, were in the air, according to Flightradar24.

As wildfires and sea level rise wipe out communities from California to North Carolina, residents continue to rebuild in disaster-prone areas.

And while more electricity is being generated by wind, solar and other clean energy, the world is still largely powered by fossil fuels such as oil, gas and coal, the primary sources of planet-warming emissions.

The cumulative effects of all those greenhouse gases are now on terrifying display around the globe. The planet has warmed by an average of 1.2 degrees Celsius compared with preindustrial levels, fueling a dizzying array of extreme weather events.

Studies show that the deadly flooding in Pakistan last year, the heat dome that baked the Pacific Northwest in 2021 and Hurricane Maria, which battered Puerto Rico in 2017, were all made worse by climate change.

“Climate change is here, now,” said Michael Mann, a climate scientist at the University of Pennsylvania. “It’s not far away in the Antarctic and it’s not off in the future. It’s these climate change fueled extreme weather events that we are all living through.”

Weather disasters that cost more than $1 billion in damage are on the upswing in the United States, according to a Climate Central analysis of data from the National Oceanic and Atmospheric Administration. In 1980, the average time between billion-dollar disasters was 82 days. From 2018-22, the average time between these most extreme events, even controlled for inflation, was just 18 days.

“Climate change is pushing these events to new levels,” said Bernadette Woods Placky, chief meteorologist at Climate Central. “We don’t get breaks in between them to recover like we used to.”