Found it. =)
Three display weather graphing setup - Discussion / Projects - Pimoroni Buccaneers
EDIT: That build is actually sitting in front of me on my computer desk. The barometric pressure is the one I watch the most. I live on the seacoast so it’s a big deal if it drops fast. A 2 mb drop in a 2 hour period is considered as dropping rapidly. That third display graphs a 2 hour period.