First create an account on ThingSpeak.
Then create a new Channel on your ThingSpeak account.
Find How to Create a New Channel Fill Field 1 as Pressure ,Field 2 as Temperature, Field 3 asHumidity,Field 4 as altitude and Field 5 as Bat Voltage.
In your ThingSpeak account select “Channel” and then “My Channel”.
Click on your channel name.
Click on “API Keys” tab and copy the “Write API Key”
Open the Solar_Weather_Station_ThingSpeak code .
Replace the “WRITE API ”with the copied “Write API Key”.
You can see my live feed.
Currently, I am getting an inconsistent reading for battery voltage, so the field is disabled.