IKEA ALPSTUGA Air Quality Monitor

Quick verdict

The ALPSTUGA is a cheap way to get CO2 and PM2.5 readings into Home Assistant, and because it speaks Matter over Thread it stays fully local with no IKEA hub. You will need a Thread border router, but if you already have one this is an easy, low-cost addition for ventilation automations.

Standout: Affordable Matter over Thread air quality monitor covering CO2, PM2.5, temperature and humidity.

Last checked: 2026-05-25

Compatibility snapshot

Why it stands out

• measures CO2, PM2.5, temperature and humidity in one inexpensive unit
• Matter over Thread means fully local control with no IKEA hub required
• one of the cheapest ways to add CO2 monitoring to a Matter setup

Reasons to hesitate

• requires a Thread border router on your network
• no formaldehyde or full VOC index, only CO2 and PM2.5 particulate
• Matter air quality sensor support in Home Assistant is newer than other categories

Best for

• Matter and Thread Home Assistant setups that want affordable CO2 and particulate monitoring
• triggering ventilation or air purifiers when CO2 or PM2.5 rises

Avoid if

• you do not have a Thread border router and do not want to add one
• you need a full VOC index or formaldehyde reading

Privacy and local-control notes

Matter over Thread device. Readings stay local through Home Assistant and a Thread border router, with no IKEA cloud account required for operation.

Home Assistant support: supported · integration path: matter.

Buying reality check

Price notes: One of the lowest-cost CO2 and particulate monitors available. Sold through IKEA only.

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