Terrestream vs Ruuvi Air

Manufacturer page checked September 12, 2026. Ruuvi Air uses Sensirion SEN66 for CO₂, PM₁/PM_2.5/PM₄/PM₁₀, VOC Index, NO_x Index, temperature, and humidity, and adds air pressure and an IAQS score. Ruuvi lists €149 excluding tax. Home Assistant documents built-in local-push support over direct Bluetooth; a Gateway is not required for that direct path, while remote Gateway/Cloud service is separate.

Where Ruuvi fits. Ruuvi Air belongs on the shortlist for buyers who like Ruuvi’s open-source culture, Bluetooth Low Energy broadcasting, Home Assistant support, and a simple app-led experience.

Where Terrestream differs. Terrestream is Wi-Fi-direct with a touchscreen display, local HTTP API, MQTT, Home Assistant, outdoor air/weather/pollen/smoke fusion, and a web dashboard included from the start. It is also packaged for US/Canada buyers with FCC/ISED regulatory disclosures and a UL-listed power supply.

Factual distinction. Ruuvi Air is the open-friendly Bluetooth/Gateway comparison point. Terrestream uses a similar multi-signal core but focuses on finished room interpretation, local network workflows, and buyer-ready dashboard evidence.