sarah/lovelace/button_card_templates/v2/humidity_button.yaml

humidity_button:
  type: custom:button-card
  template: [regular, progress]
  state_display: "[[[ return Math.round(entity.state) + ' %' ]]]"
  icon: mdi:water-percent
  variables:
    min_value: 25
    max_value: 90
    normal_value: 40
    high_value: 65
    low_color: "var(--color-red)"