Where those two lines meet is the current state of your air. Congratulations, you’ve plotted your first point. The 3 Most Useful Things You Can Do Now Now that you have your point (85°F & 60% RH), let’s read the answers.
Find the 60% RH curve (it looks like a line bowing to the right). Follow that curve until it crosses the vertical 85° line. psychrometric chart tutorial
Find 85° on the bottom axis (horizontal). Follow the vertical line straight up. Where those two lines meet is the current state of your air
But here’s the truth: It tells you everything about a parcel of air—how hot it is, how wet it is, and how much energy it holds. how wet it is