Combine states of one entity

Configuration
1

Hello!

My weather integration (KNMI) has multiple states e.g. rain, cloudy, lightning etc. Is it possible to combine these into one state (e.g. bad weather) that can be used as a condition in automations?

Thanks for any input!

2

Yes, with a template sensor. You’d build the if-then logic to determine if the weather is good or bad.

3

Thanks!

To follow up on that, I have little knowledge on yaml and how to do the above correctly. I started with the following but since I don’t really know what I’m doing, I’ll have to ask again. Also I guess there must be an easier way to do this, perhaps use if not for the states of the entity that don’t represent bad weather.

template:
  - sensor:
      - name: "Slecht weer"
        state: >
          {% if is_state('weather.knmi.thuis', 'Gedeeltelijk bewolkt') %}
            slecht weer
          {% elif is_state('weather.knmi.thuis', 'Bewolkt') %}
            slecht weer
          {% elif is_state('weather.knmi.thuis', 'Rainy') %}
            slecht weer
          {% else %}
            goed weer
          {% endif %}