Strings manipulation

I used the Scrape platform to extract data from the website of a weather station.
With the “value_template” I cleaned most of the fields, but I was unable to cleanup the following:

22.5 km/h
19.2°C
10,2 °C

How can I remove the units ?

{{ value|replace(' km/h', '') }}
{{ value|replace(' °C', '') }}

Thanks @tom_l for the quick reply.
Surely I a m doing something wrong… with the following sintax I get an error message:

value_template: ‘{{ value|replace(’ °C’,’’) }}’

can not read an implicit mapping pair; a colon is missed at line 273, column 50:
… ‘{{ value|replace(’ °C’,’’) }}’

You need to use different type of quotation marks inside of the brackets vs outside.

value_template: "{{ value|replace(' °C', '') }}"

That works !!! Thanks All