Simple pressure chart card

Who it’s for

Meteorologists, weather station operators, and building managers ask “how has pressure changed over time, without the clutter of delta comparisons?” They want to see the current reading and a trend line in one card — the slope of the line tells them whether weather is improving or deteriorating.

What it does

A sensor currently reading 1008 hPa shows a green value — Normal — above a chart that reveals whether pressure has been rising toward settled conditions or falling toward stormy weather over the selected period.

• Large current pressure value color-coded across three bands: Low (red), Normal (green), High (red)
• Time-series chart of pressure readings over the selected time window, averaged per interval
• Shows one sensor’s data; it does not compare multiple stations or show period-over-period deltas

How to set up

Data keys

Key	Role	Type	Description
pressure	Chart series	Timeseries	Atmospheric pressure in hPa; drives the chart. The Latest value overlay is automatically derived from this same key
Latest	Latest value	Timeseries	The headline figure above the chart. Its own color ranges are where the band colors are edited

The widget ships with a simulated function datasource key labeled Pressure, 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.

If the key has never reported for the selected time window, the chart is empty and the value overlay shows no data.

Value ranges

Range (hPa)	Level	Color
< 1000	Low	Red
1000–1020	Normal	Green
> 1020	High	Red

How to customize

• To use your own pressure thresholds — edit the color ranges on the Latest data key; adjust the three default bands to match your operational limits.
• To hide or show the chart — toggle Show chart in the widget settings.
• To change the chart line color — set Chart color.
• To show min, max, or total in the legend instead of avg — edit the Legend settings.
• To hide the entity name subtitle or the timestamp — turn off Show subtitle or Show date.
• To match your dashboard’s fonts — set the font options under each data key’s appearance settings.

Tips

• Use this card when the trend shape matters more than the exact period-over-period change. Add the full pressure chart card if you need a delta hPa figure alongside the chart.
• A downward slope of 10 hPa over 3 hours is a classic rapid-fall signature — the steeper the line, the faster-moving the front.