Putting the city in personal environmental monitoring, Netatmo Urban Weather Station observes and tracks conditions both indoors and out. Minimal aluminum sensor tubes and WiFi make setup a…breeze. The iPhone app (Android coming soon) monitors temperature, humidity, barometric pressure, CO2 and general weather, also, acoustic comfort, and air quality, provides real time alerts, including when to ventilate. Historical trend tracking, cloud data storage, sharing, and access from multiple devices helps your greater understand of the context you live in. $179.