Climate Central analyzed average annual temperature trends since 1970 in 49 states and 242 U.S. cities to understand how temperatures across the country have changed as heat-trapping pollution has continued to climb.

The fastest-warming U.S. states from 1970 to 2025 are:

  • Alaska
  • New Jersey
  • New Mexico
  • Delaware
  • Massachusetts
  • Vermont

The fastest-warming U.S. cities are:

  • Reno, NV
  • Las Vegas, NV
  • El Paso, TX
  • Burlington, VT
  • Tyler, TX

This Climate Matters analysis is based on open-access data from the National Oceanic and Atmospheric Administration (NOAA). See Methodology for details.

1 comment

sorted by: hot top controversial new old
[–] 1 point 5 months ago* (last edited 5 months ago)

Fastest-warming cities

Change in average annual temperature (°F), 1970-2025

Reno, NV +7.9°

Las Vegas, NV +6.0°

El Paso, TX +5.9°

Burlington, VT +5.3°

Tyler, TX +5.3°

  • source