Heat Wave Characteristics in 50 Large U.S. Cities, 1961–2023

Description

These maps show changes in the number of heat waves per year (frequency); the average length of heat waves in days (duration); the number of days between the first and last heat wave of the year (season length); and how hot the heat waves were, compared with the local temperature threshold for defining a heat wave (intensity). These data were analyzed from 1961 to 2023 for 50 large metropolitan areas. The size of each circle indicates the rate of change per decade. Solid-color circles represent cities where the trend was statistically significant. For more information: www.epa.gov/climate-indicators

Resources

Name Format Description Link
23 https://geodata.epa.gov/arcgis/rest/services/OAR_OAP/HeatWaves/MapServer
0 https://www.epa.gov/climate-indicators
0 https://www.epa.gov/climatechange

Tags

  • weather
  • other documents
  • united states
  • air
  • urban
  • heat waves
  • climate
  • 020:072
  • cities
  • health
  • heat
  • indicator

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