Horizontal temperature card with background

Who it’s for

Building managers, city planners, and environmental monitoring teams ask “what is the temperature right now?” They use these cards on weather monitoring or field station screens where a background image gives the card a polished look while keeping the layout narrow.

What it does

A sensor reading 22°C shows an orange icon and value — Warm — over the preset background image, in a horizontal strip that takes up less vertical space than a square card. The same card shows deep blue at -25°C — Extreme Cold — and red at 42°C — Extreme Heat.

• Color-coded icon and value across seven temperature bands from Extreme Cold to Extreme Heat
• Horizontal layout with the icon and label on the left and the value on the right — fits narrow columns and metric-row dashboards
• Decorative background image bundled with the widget, with a white overlay that keeps the text readable
• Last-updated timestamp showing how long ago the reading arrived
• Shows one sensor’s data; it does not chart temperature trends or compare multiple probes

How to set up

Data keys

Key	Role	Type	Description
temperature	Main value	Timeseries	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.

The card shows the value in °C with no decimal places. If the key has never reported, the card displays the label and icon with an empty value, not an error.

Value ranges

Range (°C)	Level	Color
below −20	Extreme Cold	Deep Blue
−20 – 0	Cold	Blue
0 – 10	Cool	Light Blue
10 – 20	Moderate	Orange
20 – 30	Warm	Orange
30 – 40	Hot	Red-Orange
above 40	Extreme Heat	Red

How to customize

• To swap the background image — open the widget settings and set Background to a different image or switch to a solid color.
• To adjust how much the background shows through — change the Overlay opacity; lower values reveal more of the image, higher values push it further back.
• To use your own temperature thresholds — edit Icon color ranges and Value color ranges; set the same boundaries in both so the icon and the number always agree.
• To display in °F — add a unit conversion function to the data key; adjust the range boundaries to Fahrenheit equivalents.
• To change the icon — set Icon to any Material or MDI icon name.
• To hide the label, icon, or timestamp — turn off Show label, Show icon, or Show date.
• To match your dashboard’s fonts — set Value font and Label font.

Tips

• Keep Icon color ranges and Value color ranges on the same boundaries so the icon and the number always show the same band.
• If the background image reduces contrast, raise the Overlay opacity to keep the text readable from a distance.
• This layout works well alongside humidity and wind speed horizontal cards in a weather summary row.