---
title: thermalState
framework: foundation
role: symbol
role_heading: Instance Property
path: foundation/processinfo/thermalstate-swift.property
---

# thermalState

The current thermal state of the system.

## Declaration

```swift
var thermalState: ProcessInfo.ThermalState { get }
```

## Discussion

Discussion At higher thermal states your app should reduce usage of system resources. For more information, see ProcessInfo.ThermalState.

## See Also

### Getting the thermal state

- [ProcessInfo.ThermalState](foundation/processinfo/thermalstate-swift.enum.md)