Here is another smart environmental sensor that lets you keep an eye on temperature and humidity in your home. Eve Degree is HomeKit enabled and has a large LCD display to show its readings. It connects to your smartphone or tablet to provide you insights about temperature and humidity. The companion app visualizes your past data.
Eve Degree has a water resistance rating of IPX3. Its app graphs your data and lets you export it. You can use it with the 4th gen Apple TV for home automation. Expected to ship for under $70 at this time.[Source]