Color-coded map of the United States depicting region-by-region temperature change since 1900
Environmental Protection Agency, an agency of the U.S. federal government
<ul><li>Formal citation to source: <a rel="nofollow" class="external text" href="https://web.archive.org/web/20211230101600/https://www.epa.gov/climate-indicators/climate-change-indicators-us-and-global-temperature">Climate Change Indicators: U.S. and Global Temperature</a>. <i>EPA.gov</i>. Environmental Protection Agency (2021). Archived from <a rel="nofollow" class="external text" href="https://www.epa.gov/climate-indicators/climate-change-indicators-us-and-global-temperature">the original</a> on <span class="mw-formatted-date" title="2021-12-30">30 December 2021</span>. "EPA's data source: NOAA (National Oceanic and Atmospheric Administration). 2021. Climate at a glance. Accessed February 2021. www.ncdc.noaa.gov/cag." (<a rel="nofollow" class="external text" href="https://www.epa.gov/sites/default/files/2021-04/temperature_figure3_2021.png">Direct link to graphic</a>; <a rel="nofollow" class="external text" href="https://web.archive.org/web/20220101115841/https://www.epa.gov/sites/default/files/2021-04/temperature_figure3_2021.png">archive</a>)</li>
<li>Source page: <a rel="nofollow" class="external free" href="https://www.epa.gov/climate-indicators/climate-change-indicators-us-and-global-temperature">https://www.epa.gov/climate-indicators/climate-change-indicators-us-and-global-temperature</a></li>
<li>Archive thereof: <a rel="nofollow" class="external free" href="https://web.archive.org/web/20211230101600/https://www.epa.gov/climate-indicators/climate-change-indicators-us-and-global-temperature">https://web.archive.org/web/20211230101600/https://www.epa.gov/climate-indicators/climate-change-indicators-us-and-global-temperature</a></li>
<li>Direct link to image: <a rel="nofollow" class="external free" href="https://www.epa.gov/sites/default/files/2021-04/temperature_figure3_2021.png">https://www.epa.gov/sites/default/files/2021-04/temperature_figure3_2021.png</a></li>
<li>Archive thereof: <a rel="nofollow" class="external free" href="https://web.archive.org/web/20220101115841/https://www.epa.gov/sites/default/files/2021-04/temperature_figure3_2021.png">https://web.archive.org/web/20220101115841/https://www.epa.gov/sites/default/files/2021-04/temperature_figure3_2021.png</a></li></ul>