I was bored in my hotel room and I ended up browsing WMI, found one cool/fun thing. I have a EliteBook 8570w and it turns out that HP uses WMI to store data and that makes it possible to read the data using PowerShell of course. Here is how:

Read HP Bios Sensor data from WMI using PowerShell

So, here is the actual code for you to copy:

#Read HP Bios Sensor data from WMI using PowerShell
$BIOSSensor = Get-WmiObject -Class HP_BIOSSensor -Namespace root\hp\instrumentedbios
$BIOSSensor | Select-Object Name,CurrentState,CurrentReading,Description

/Mike