openexchangerates sensor will show you the current exchange rate from Open Exchange Rates that provides realtime exchange rates for 170 currencies. The free account is limited to only USD as a base currency, allows 1000 requests per month, and updates every hour.
Obtain your API key here
To enable this sensor, add the following lines to your
# Example configuration.yaml entry sensor: - platform: openexchangerates api_key: YOUR_API_KEY quote: EUR
The API Key for Open Exchange Rates.