On a road trip right now, randomly keep getting dizzy and major pressure in my head. i have uncompensated labyrinthitis, i noticed when we got close to a storm it got a lot worse, is that the lab?

Yes: Yes. If you have the medicine you normally take for this, it is time to begin it now. Over the counter relief can be gained with an antihistamine/decongestant combination to relieve pressure and dramamine (dimenhydrinate) for dizziness. Follow up with your doctor when you get back home.

Inner ear: I believe that changes in barometric pressure can affect the balance mechanisms of the inner ear and fluid retention may also play a role. A neurologist or an otolaryngologist who specializes in labyrinthine disorders can advise you better,however.