The first thing you will need to do is to login to Adafruit IO and visit the Settings page.
Click the VIEW AIO KEY button to retrieve your key.
A window will pop up with your Adafruit IO. Keep a copy of this in a safe place. We'll need it later.
You will also need to create a feed called Humidity.
If you need help getting started with creating feeds on Adafruit IO, check out the Adafruit IO Feed Basics guide.
Add a new Line Chart block to a new or existing dashboard. Make sure you have selected both the Temperature and Humidity feeds as the data sources for the block.
When you reach the block settings, set the Hours of History setting to 24 hours, and name the block whatever you would like.
When you are finished editing the form, click Create Block to add the new block to the dashboard.
If you need help getting started with Dashboards on Adafruit IO, check out the Adafruit IO Dashboard Basics guide.
Next, we will look at wiring the circuit.