You can use this power shell function, but it has to be run with admin privileges, which i think ignition do have
function Get-Temperature {
$t = Get-WmiObject MSAcpi_ThermalZoneTemperature -Namespace "root/wmi"
$returntemp = @()
foreach ($temp in $t.CurrentTemperature)
{
$currentTempKelvin = $temp / 10
$currentTempCelsius = $currentTempKelvin - 273.15
$currentTempFahrenheit = (9/5) * $currentTempCelsius + 32
$returntemp += $currentTempCelsius.ToString() + " C : " + $currentTempFahrenheit.ToString() + " F : " + $currentTempKelvin + "K"
}
return $returntemp
}
Get-Temperature