IM not well educated on tomatoes. But I know cannabis in veg stage likes 50-70%, and in flower stage its best to have 40-50%. Mold likes to grow above 50%. But as long as you have a nice breeze your good. I constantly battle white mildew indoors but I use neem oil to protect against it.
Tomatoes and cannabis are great companion plants! LoL
I haven't noticed any mildew issues or anything yet, but I have neem oil on hand as well in case something decides my plants are tasty LoL
Thank you for the info!!!