The 30-year Treasury yield trades near 5.35% as of mid-September 2026, its highest level since 2007, after rising more than 70 basis points year-to-date amid persistent inflation and shifting monetary policy expectations. August CPI held at 3.4% year-over-year with core at 2.4%, yet surging oil prices from geopolitical tensions have lifted breakevens and reinforced market-implied odds of a 25-basis-point Fed funds rate hike at the September 15-16 FOMC meeting above 70%. Heavy Treasury issuance tied to fiscal deficits, combined with an expanding term premium, has kept long-end yields elevated despite solid recent auction demand. Traders assessing the lowest yield before 2027 will monitor upcoming inflation releases, labor data, and any FOMC signals on the policy path versus historical precedents for rate cycles.