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 3.0 on any ZHA / Zigbee2MQTT coordinator - no 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
• in Thread mode it requires a Thread border router on your network
• runs Zigbee 3.0 or Thread but never both at once, and it ships in Thread firmware - moving it to ZHA or Zigbee2MQTT takes a one-time protocol switch in the Aqara Home app

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 have neither a Thread border router nor a Zigbee coordinator and do not want to set either up

Privacy and local-control notes

Fully local on either radio: Matter over Thread, or Zigbee 3.0 paired straight to ZHA / Zigbee2MQTT with no Aqara hub. No cloud account needed for ongoing use. 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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