What's the chances home weather stations have some bias in their signal (e.g. likely to be mounted on a hot roof) and that these data points get mixed into a larger corpus and someone ends up drawing incorrect conclusions from that corpus? Hopefully not high?
I used to own S4 phone and it's one of the best smartphone ever. Actually even as the owner never knew that it has thermometer and humidity sensors built-in ten years ago that even most of the USD1K+ phones nowadays do not have these very useful sensors [1].
[1] What You May Not Know About GALAXY S4 Innovative Technology:
Weather Underground actually has guidelines for siting a weather station so that this is consistent --- presumably there are similar guidelines for this program:
