While this is a quite lovely idea, it should be noted that you can also go for a 433MHz transciever and a much cheaper 433MHz humidity/temperature sensor.

The temperature and humidity inside of your house has more impact on you and your home than making it feel a little chillier or muggier than usual.

Having this sensor means you won’t need to buy a separate gadget to measure temperature or humidity and run Apple Home automations to, say, turn on a fan when it gets above 70 degrees Fahrenheit ...

The sensor is made by Texas Instruments, which calls it a "HDC2010 Humidity and Temperature Digital Sensor," according to TechInsights, a firm that analyses components inside of electronics.

With its built-in sensor, HomePod can detect and tell you the temperature and humidity of the room. And you can set it in automations so the blinds close if the temperature hits 80 degrees.

The sensor measures relative and absolute humidity, dew point, wet and dry temperatures, and enthalpy. The range of measurement is from 0% to 100% relative humidity and – 40F to 356F. Accuracy ...

Govee's Alexa-enabled Smart Temperature + Humidity Sensor features an integrated Swiss-made SHT30 sensor for high precision monitoring, with the temperature gauge accurate within .3 degrees ...

Update: ‌HomePod‌ software version 16.3 enables the temperature and humidity sensor in the ‌HomePod mini‌, according to Apple's release notes. Related Roundups: HomePod , HomePod mini Tag ...

The temperature/humidity sensor feature should be unlocked with today’s iOS 16.3 release, which also brings support for the upcoming HomePod, along with various security-minded updates.