Individual allergy index (IAI) chart card

Who it’s for

Allergy sufferers, public health managers, and outdoor event organizers ask “what is the allergy index right now, and has it been rising or falling today?” They need both the current reading and the intraday trend to decide whether to issue an advisory or wait for conditions to improve.

What it does

A sensor reporting IAI_level = 4.1 shows the current index color-coded by risk band alongside a time-series chart of recent readings: green for Good (0–2), light green for Moderate (2–6), orange for Elevated (6–9), and red for Hazardous (above 9). The chart lets health managers see whether an elevated reading is a new peak or a declining event.

• Live IAI reading with color coding across four severity bands
• Historical trend chart shows how the allergy index has evolved over the selected time window
• Shows one sensor’s data per widget; add multiple widgets to track and compare locations across a network

How to set up

Data keys

Key	Role	Type	Description
IAI_level	Chart series	Timeseries	Individual Allergy Index value (unitless); 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 Individual Allergy Index, 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	Level	Color
0–2	Good	Green
2–6	Moderate	Light Green
6–9	Elevated	Orange
9+	Hazardous	Red

How to customize

• To change the time window — adjust the dashboard time filter to show the last hour, day, or week of IAI readings.
• To change the severity thresholds — edit the color ranges on the Latest data key to match your local allergy forecast standards.
• To change the band colors — edit the color for each severity level in the widget settings.

Tips

• IAI often peaks in late morning as pollen disperses with rising temperatures; a 24-hour chart helps health managers correlate peaks with time of day and plan advisory timing accordingly.
• Compare charts across multiple monitoring points to identify hotspot locations where allergen concentrations consistently run higher than the network average.
• For public health reporting, use the chart’s export feature to download time-series data for the period covered by an advisory.