If you want to make your own system for doing so, Instructables user ICStation shows off how to use an Arduino to do it. The system here monitors temperature, humidity, and smoke levels and alerts ...

Start monitoring temperature and humidity in your home from your smartphone using Govee's Alexa-Enabled Smart Temperature + Humidity Sensor ... on its built-in LCD screen. This smart device ...

The Anavi Thermometer Development board is fully compatible with the Arduino IDE ... It comes with a built-in DHT22/AM2302 temperature and humidity sensor and has slots for a mini OLED display ...