KEY FACTS. Meteorological summer starts June 1, and the season is heating up across the U.S. Summers have warmed in 97% of 242 U.S. cities analyzed — by an average of 2.6°F since 1970.

Read the full report: Climate change increasing pregnancy risks around the world due to extreme heat (2020-2024) Download the data: For 247 countries, territories, and dependencies and 940 cities ...

Table 3. Top 10 ACIS stations with the highest number of days at or above a CSI of 3 during April 2025. We analyzed 191 Applied Climate Information System (ACIS) stations associated with U.S ...

KEY CONCEPTS. Climate change is supercharging the water cycle, bringing heavier rainfall extremes and related flood risks across the U.S. Some 126 U.S. cities (88% of 144 analyzed) have ...

High temperatures attributable to climate change exposed millions to heat-related health risks between December 2024 and February 2025.

KEY CONCEPTS. The U.S. generated a record 756,621 gigawatt-hours (GWh) of electricity from solar and wind in 2024 — enough to power the equivalent of more than 70 million average American homes.

Warming trends in 172 U.S. cities are giving plants more time to grow and release pollen. That means longer allergy seasons for millions in the U.S. with seasonal allergies.

KEY CONCEPTS. Climate Central analyzed 55 years of temperature data and found that meteorological spring (March - May) has warmed across the U.S. from 1970 to 2024.

Read the full report: Climate change is heating up West Africa's cocoa belt Download the data: Data for 44 districts, regions, and states in Cameroon, Côte d'Ivoire, Ghana, and Nigeria ...

KEY CONCEPTS. It’s official: 2024 was the hottest year on record — both globally and for the U.S. Average global temperatures in 2024 ranked highest in the 145-year record, 1.54°C (2.77°F ...

2024 is on track to be Earth’s hottest year on record, and the U.S. experienced 24 billion-dollar weather and climate disasters this year through November.

Conditions that trigger fall color each year are shifting with climate change, potentially disrupting the ecological and economic value linked to fall foliage.