Indoor PM10 chart card with background

Who it’s for

Facility managers, building managers, and indoor air quality specialists ask “how has PM10 trended in this space recently?” The chart with background combines a compact trend line with a full-card color signal so the current status is visible at a distance.

What it does

A sensor reporting pm10 = 25 µg/m³ renders a time-series trend chart on a card whose background color reflects the current severity: light green for Good (0–50 µg/m³), orange for Moderate (50–150 µg/m³), and red for High (above 150 µg/m³).

• Full-card background color makes PM10 severity readable across a room without reading the number
• Trend chart of PM10 concentration over the selected dashboard time window
• Shows one sensor’s data per widget; add multiple widgets to compare trends and current status across spaces

How to set up

Data keys

Key	Role	Type	Description
pm10	Chart series	Timeseries	PM10 concentration in µg/m³; change the key name to match your device’s telemetry key
Latest	Latest value	Timeseries	The headline figure above the chart. Its own color ranges are where the band colors are edited
Delta percent	Percentage change	Timeseries	Change against the previous period, as a percentage
Delta absolute	Absolute change	Timeseries	Change against the previous period, in the key’s own unit

The widget ships with a simulated function datasource key labeled PM10, 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 (µg/m³)	Level	Color
0–50	Good	Light Green
50–150	Moderate	Orange
150+	High	Red

How to customize

• To change the time window — adjust the dashboard time filter to show the last hour, day, or week of PM10 readings.
• To change the severity thresholds — edit the color ranges on the Latest data key.
• To change the background colors — edit the color of each range on the Latest data key.

Tips

• On a wall display, the colored background signals the current PM10 severity from across the room while the embedded chart shows whether the level is a transient spike or a sustained elevation that requires investigation.
• Use consistent severity colors across all indoor air quality widgets so facilities staff can interpret a colored background anywhere on the dashboard without reading the label.
• A PM10 trend that gradually rises over a week without a single sharp spike suggests accumulated dust from inadequate cleaning rather than a single event — useful information when reviewing the cleaning contract.