Healthy Weather

Healthy Weather tells you exactly when the sun is worth stepping outside for — and when it isn't. Most weather apps stop at UV index. We go further: a science-backed model that calculates your personal vitamin D synthesis based on your skin type, age, cloud cover, and local air quality. No more guessing if 15 minutes at 3pm in November actually does anything. Built for people who'd rather get their D from the sky than a pill.