The US Treasury publishes yields for Treasury Bills (short-term), Treasury Notes (medium-term) and Treasury Bonds (long-term).  The data on the charts below is end-of-day (EOD) with closing values only.
Note: Treasury yields move inverse to Treasury prices. Yields rise when Treasury prices fall and yields fall when Treasury prices rise.

The default value in the chart below is for the 30 Year Treasury Bond. To view different bonds, change the symbol in the upper left ($UST20Y – 20 Year, $UST10Y – 10 Year, $UST5Y – 5 Year) and click the update button. To view a list of other yield charts symbols click HERE