Indoor temperature card

Who it’s for

Facility managers, building managers, and smart home owners ask “what is the temperature in this space right now?” They need an instant, color-coded reading to confirm whether the room is within the comfortable range for occupants.

What it does

A sensor reporting temperature = 21°C displays the reading on a card with the value color-coded by comfort level: blue for Cold (below 18°C), light green for Comfortable (18–24°C), and red for Hot (above 24°C).

• Live temperature reading in °C with automatic color coding across three comfort bands
• Instant comfort signal lets building staff spot overheated or under-heated spaces without reading the number
• Shows one sensor’s reading per widget; tile multiple widgets to monitor all rooms at a glance

How to set up

Data keys

Key	Role	Type	Description
temperature	Main value	Timeseries	Indoor temperature in °C; change the key name to match your device’s telemetry key

The widget ships with a simulated function datasource key labeled Temperature, so it draws random values until you point the datasource at a device and rename the key.

To point it at your own device: open the dashboard in edit mode, open the widget’s Datasources, pick the entity or entity alias, and replace the function key with the key your device reports.

Value ranges

Range (°C)	Level	Color
0–18	Cold	Blue
18–24	Comfortable	Green
24+	Hot	Red

How to customize

• To change the comfort thresholds — edit Icon color ranges and Value color ranges; set the same boundaries in both so the icon and the number always agree.
• To change the band colors — edit the color for each comfort level in the widget settings.
• To switch units to °F — change the Units field and adjust the thresholds accordingly in the widget settings.

Tips

• A room holding below 18°C during working hours signals a heating fault or an open window that needs attention; a room above 24°C in summer suggests the cooling setpoint has drifted or a solar blind is missing.
• Tile one card per office zone and sort by temperature to prioritize the rooms furthest from the comfort range when walking the floor on a Monday morning.
• Pair this card with a humidity card on the same row — temperature alone does not determine thermal comfort; a room at 22°C with 70% relative humidity feels significantly warmer than the same temperature at 40% humidity.