Moving to a humid part of the country near the ocean. today is 91% humidity. have conflicting reports of humidity if good/bad for allergies and colds?

Depends : On the cause of allergy, the allergen itself, is it indoors or outdoors, dust mites, thrive in humidity, their source of water, so using a dehumidifier as A/C helps a great deal people who have dust mite allergies, also damp areas hurt patients with mold allergy, pollen allergens vary, that's why the general advice is to be in a temperate dry environment, check aaaai.org for an allergist