Smart phones are good at collecting live barometric pressure data but not much else. Temperature sensors aren&#x27;t very useful because they are poorly calibrated, you can&#x27;t reliably tell whether someone is outdoors, and the reading can be thrown off by the heat generated by the device or the person holding it. UV sensors are seldom pointed in the right direction. And I haven&#x27;t seen a phone with a wind speed or precipitation sensor yet.