The Federal Reserve is the central bank of the United States, an organization that provides up-to-date information on the exchange rate in relation to the dollar of the different groups around the world.

The Federal Reserve provides information on currency exchange rates on its website. The information is updated on a weekly basis, and provides news on the exchange rate of currencies such as the Brazilian real, the Mexican peso or the Venezuelan bolivar, among others.
In Latin American countries, one of the main sources of foreign exchange is remittances, money sent from abroad to your country. It is important that migrants who send money know the exchange rate in their countries in relation to the US dollar.
Check the exchange rates on a weekly basis at the following link: https://www.federalreserve.gov/releases/h10/current/.
FEDERAL RESERVE