1.33% of the area of the United States and Puerto Rico was in exceptional drought (D4), the highest-intensity category of the U.S. Drought Monitor, based on data valid as of September 29, 2026.
National Drought Mitigation Center (2026)
National Drought Mitigation Center, University of Nebraska-Lincoln. (2026, October 1). U.S. Drought Monitor: U.S. States and Puerto Rico, data valid September 29, 2026. https://droughtmonitor.unl.edu