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  2. Climate Change Indicators

Contact Us About Climate Indicators

Please use the form below to send us comments or questions. Be sure to include your e-mail address if you’d like a response.

Mailing Address:
Climate Science and Impacts Branch
Climate Change Division
Office of Atmospheric Programs (MC-6207A)
Environmental Protection Agency
1200 Pennsylvania Ave. NW.
Washington, DC 20460

If you would like a response, please add your email address.

Climate Change Indicators

  • View the Indicators
    • Greenhouse Gases
      • U.S. Greenhouse Gas Emissions
      • Global Greenhouse Gas Emissions
      • Atmospheric Concentrations of Greenhouse Gases
      • Climate Forcing
    • Weather and Climate
      • U.S. and Global Temperature
      • Seasonal Temperature
      • High and Low Temperatures
      • Heat Waves
      • U.S. and Global Precipitation
      • Heavy Precipitation
      • Tropical Cyclone Activity
      • River Flooding
      • Drought
      • A Closer Look: Temperature and Drought in the Southwest
    • Oceans
      • Ocean Heat
      • Sea Surface Temperature
      • Marine Heat Waves
      • Sea Level
      • A Closer Look: Land Loss Along the Atlantic Coast
      • Coastal Flooding
      • Ocean Acidity
    • Snow and Ice
      • Arctic Sea Ice
      • Antarctic Sea Ice
      • Ice Sheets
      • Glaciers
      • Arctic Glaciers
      • A Closer Look: Glaciers in Glacier National Park
      • Lake Ice
      • Great Lakes Ice Cover
      • Community Connection: Ice Breakup in Three Alaskan Rivers
      • Snowfall
      • Snow Cover
      • Snowpack
      • Permafrost
      • Freeze-Thaw Conditions
    • Health and Society
      • Heat-Related Deaths
      • A Closer Look: Heat-Related Workplace Deaths
      • Heat-Related Illnesses
      • Cold-Related Deaths
      • Heating and Cooling Degree Days
      • Residential Energy Use
      • Lyme Disease
      • West Nile Virus
      • Length of Growing Season
      • Growing Degree Days
      • Ragweed Pollen Season
    • Ecosystems
      • Wildfires
      • Streamflow
      • Stream Temperature
      • Tribal Connection: Trends in Stream Temperature in the Snake River
      • Lake Temperature
      • Great Lakes Water Levels and Temperatures
      • Bird Wintering Ranges
      • A Closer Look: The Black Guillemots of Cooper Island
      • Marine Species Distribution
      • Leaf and Bloom Dates
      • Community Connection: Cherry Blossom Bloom Dates in Washington, D.C.
  • Dig into the Data
    • Map Explorer Basics
    • Southwest Case Study
  • Indicator Stories
    • Indicator Infographics
    • Community Connections
    • Indicators Overview StoryMap
    • Seasonality and Climate Change
  • About the Indicators
    • Data Sources and Methods
    • Frequent Questions about the Indicators
    • Publications
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on April 8, 2025
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