Aqara Climate Sensor W100

Quick verdict

A simple, cheap temp and humidity sensor that runs on Thread. No hub, no cloud, no fuss. Add it to Home Assistant via Matter and you get local climate data for automations. It does one thing well and does it without phoning home. Buy a handful and put one in every room.

Standout: Temperature and humidity sensor with a 3.4-inch LCD and three programmable buttons, running Matter over Thread (or Zigbee via an Aqara hub), fully local.

Last checked: 2026-05-31

Compatibility snapshot

Why it stands out

• built-in 3.4-inch LCD plus three programmable buttons for at-a-glance readings and local control
• fully local via Matter with zero cloud dependency
• budget-friendly for scattering multiple sensors around your home

Reasons to hesitate

• basic temp and humidity only, no air pressure or air quality
• requires a Thread border router on your network
• needs an Aqara hub for Zigbee, or a Thread border router for Matter over Thread

Best for

• Home Assistant users who want cheap, local climate sensors for every room
• Thread-based setups that need temperature data for HVAC automations

Avoid if

• you want air quality or pressure readings. Look at more full-featured sensors
• you do not have a Thread border router and do not want to set one up

Privacy and local-control notes

Fully local via Matter over Thread. No cloud account needed. Reports temperature and humidity only, so no privacy concerns.

Home Assistant support: supported · integration path: matter.

Buying reality check

Price notes: One of the cheapest Thread-native climate sensors available. Great for buying multiples.

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