US Treasury 30-year yield (US30Y) is one of the US Treasury yields this site reads, from US Treasury, daily par yield curve and never from a market feed. Its key here is treasury/US30Y.
No grade yet. This site grades an asset only after a reading of it passes a test written before the data was looked at, and no reading of a yield has been written yet.
The latest reading is 5.35 percent a year, published 2026-11-10; a year earlier it was 4.67 percent a year (2025-11-12).
| Date | Yield, percent a year |
|---|---|
| 2026-11-10 | 5.35 |
| 2026-10-30 | 5.31 |
| 2026-09-30 | 5.64 |
| 2026-08-31 | 5.25 |
| 2026-07-31 | 5.27 |
| 2026-06-30 | 4.91 |
| 2026-05-29 | 4.99 |
| 2026-04-30 | 4.98 |
| 2026-03-31 | 4.88 |
| 2026-02-27 | 4.64 |
| 2026-01-30 | 4.87 |
| 2025-12-31 | 4.84 |
| 2025-11-28 | 4.67 |
Source: US Treasury, daily par yield curve, read here since 2023-01-03 (965 readings).
Every asset has a record. Company Analysis reads each one from its own source: a company files with the SEC, a network publishes its ledger, a Treasury publishes its yields, a central bank its rates. No grade until a reading passes the validation loop.