The Importance of Humidors in Baseball in Mexico City

The humidor in Mexico City is not set at Colorado levels or lower. It's set at the same 70 degrees and 57% humidity as the 29 non-Colorado parks. The air in those environments is dry enough that a humidor set to 50% relative humidity has a significant effect on the ball In Mexico City, the relative humidity during the summer months is considerably higher than 50%. So if a team were to store baseballs in the same conditions that the Rockies do at Coors, the balls would dry out and fly farther.