Your smart speakers have more built-in functionality than you might have realized if you've just been using them to ... smart speaker has temperature and/or humidity sensors.

or wireless sensor nodes in buildings; or IP network cameras. In addition, an ALERT output provides a hardware notification of ambient temperature and relative-humidity measurements that violate ...

you can now enable this sensor and use it to keep tabs on what’s happening in the room your speaker is in. You can also find a temperature and humidity sensor in the second-generation HomePod ...