Indoor PM10 chart card

Who it’s for

Facility managers, building managers, and indoor air quality specialists ask “what is the PM10 level in this space right now, and has it been elevated over the past few hours?” They need both the current reading and the trend to distinguish a brief cleaning event from a persistent air quality problem.

What it does

A sensor reporting pm10 = 25 µg/m³ shows the current value color-coded by severity alongside a time-series chart of recent readings: light green for Good (0–50 µg/m³), orange for Moderate (50–150 µg/m³), and red for High (above 150 µg/m³). The chart lets facility staff see whether elevated PM10 is a momentary spike or a sustained issue.

• Live PM10 reading in µg/m³ with color coding across three severity bands
• Historical trend chart shows how PM10 concentration has evolved over the selected time window
• Shows one sensor’s data per widget; add multiple widgets to monitor different rooms or zones

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 chart colors — edit the color of each range on the Latest data key.

Tips

• A brief PM10 spike that resolves within 30–60 minutes typically indicates a localized activity (vacuuming, drilling) and requires no action; a spike that persists for hours suggests an HVAC fault such as a ruptured filter bag or a blocked recirculation damper.
• Comparing PM10 and CO2 charts side by side is a useful diagnostic: if CO2 is low (space is well-ventilated) but PM10 is high, the particle source is internal and not being filtered; if both are high, ventilation is the problem.
• For health and safety compliance, document any PM10 exceedances above 150 µg/m³ with a note of the suspected source and the corrective action taken.