Climate Central

☕ There’s more than caffeine brewing behind your morning coffee.

Climate change added more coffee-harming heat to the world’s major coffee-growing regions during 2021–2025, potentially affecting the quality and quantity of recent harvests.

The five largest producers, responsible for 75% of the world’s supply, experienced an average of 57 extra days of coffee-harming heat each year.

Achoo! Fall is finally here, and unfortunately, allergy season is sticking around.

Since 1970, fall warming has extended ragweed’s freeze-free growing season in 88% of 202 U.S. cities analyzed — by 11 days on average.

For the 50 million Americans with ragweed allergies, more time for ragweed to grow and release pollen can mean more time dealing with symptoms.

🌎 More than 1.5 billion people experienced at least 30 days of risky heat added by climate change this summer.

Climate Central’s latest analysis found that every day from June – August this year, more than one-quarter of the world’s population experienced a strong influence of human-caused climate change on daily temperatures.

How has climate change influenced this summer’s heat?

Join Climate Central for our next Monthly Climate Brief as we recap the latest global climate records and explore what they could mean for the months ahead.

Registration link in the comments below!

Heat sends thousands of Americans to the emergency room each year. How much does climate change contribute?

New research from Climate Central finds that climate change accounted for about 1 in 4 heat-related ER visits in the U.S. during the warm season from 2018–2025.

🚑: https://www.climatecentral.org/climate-matters/heat-illness-emergency-room-visits

🎾The US Open Tennis Championships is underway in New York — and the heat is serving up a new challenge.

The conditions tennis players face today aren't the same as they were decades ago. For example, over the past 55 years, the chance of experiencing a hot tournament day has jumped from 49% to 67%.

A hotter climate means a hotter court, with higher stakes for players and fans alike. Read the report: https://www.climatecentral.org/report/tennis

Since 1970, fall has warmed by 2.9°F on average in 241 major U.S. cities — and human-caused climate change is the leading driver in 82% of cities analyzed.

A warmer fall can prolong risks from heat-related illnesses, wildfires, allergies, and more.

🍁Fall into the full analysis to learn about the impacts: https://www.climatecentral.org/climate-matters/fall-package

75,000+ localized alerts. 130+ workshops. 49 special reports.

In 2025, Climate Central transformed climate science into clear, local information — helping communities understand how climate change is shaping the world around them.

See what we accomplished together in our 2025 Impact Report: https://www.climatecentral.org/impact-report

🌙 Extreme heat doesn’t end when the sun goes down.

A new Climate Central analysis found that unusually warm summer nights have increased since 1970 in 95% of 243 major U.S. cities. On average, cities now experience 24 more unusually warm nights each summer than in the early 1970s. The biggest increases in total nights were found in: Reno, NV (+79), Albany, GA (+73), and Sarasota, FL (+73).

Explore more about warm summer nights: https://www.climatecentral.org/climate-matters/warm-summer-nights-us-cities