Do you know how much water is in the air? If you do want to find out, do you look at relative humidity or dewpoint? I often hear people talk about how it was a very humid day, when in reality the relative humidity was actually lower than normal or lower than the previous day.
The amount of moisture in the air has a direct impact on the growth or lack of growth in plants. So, it's important to understand the data and make sure you get the exact variable what you need for your project. Learn more about this in my blog at the following link.