United States - Market Yield on U.S. Treasury Securities at 30-Year Constant Maturity, Inflation-Indexed was 2.61% in July of 2025, according to the United States Federal Reserve. Historically, United States - Market Yield on U.S. Treasury Securities at 30-Year Constant Maturity, Inflation-Indexed reached a record high of 2.62 in May of 2025 and a record low of -0.44 in November of 2021. Trading Economics provides the current actual value, an historical data chart and related indicators for United States - Market Yield on U.S. Treasury Securities at 30-Year Constant Maturity, Inflation-Indexed - last updated from the United States Federal Reserve on September of 2025.