---
title: HMCharacteristicValueAirParticulateSize.size2_5
framework: homekit
role: symbol
role_heading: Case
path: homekit/hmcharacteristicvalueairparticulatesize/size2_5
---

# HMCharacteristicValueAirParticulateSize.size2_5

The air particulate size of 2.5 micrometers.

## Declaration

```swift
case size2_5
```

## See Also

### Air Particulate Sizes

- [HMCharacteristicValueAirParticulateSize.size10](homekit/hmcharacteristicvalueairparticulatesize/size10.md)