Petapixel:

There are a number of websites and apps out there that help you track sunset and sunrise times so that you can plan your shoots around specific golden hour lighting. SunsetWx is a new website that takes things to the next level: it can forecast the quality of the upcoming sunset in your area (in the United States).

Created by three Pennsylvania-based meteorologists, the sunrise and sunset models take into account things like humidity, pressure changes, and clouds at various levels in the atmosphere. Wispy, high-altitude clouds are indications of a “high quality” sunset/sunrise, while low and thick clouds lower the score.

Photographers will tell you that not all sunsets are created equal. This site might be a way to increase your chances of getting that great sunset shot.