UV Index Widget & Weather Map

Avoid sunburn: check the UV index before going outside. Get an hourly UV index forecast, a home screen widget, and beautiful weather overlays on a 3D globe, all in one app.

The app calculates the UV index for the precise place and time and shows exposure on sun-facing skin surfaces such as the face and arms. The UV index is a sunburn scale, so knowing it before you head out tells you how long you can stay out and what protection you need. Advanced charts help you understand UVA, UVB and visible light beyond the standard UV index.

Key features:
• Hourly UV index forecast for any location
• Home screen UV index widget, updated through the day
• 24-hour forecast and seasonal trends across the year
• Daily sun protection window when the UV index reaches 3
• Weather map on a 3D globe: wind, rain, snow and cloud layers
• PM2.5 air quality map with AQI readings, drawn from public forecast data
• Press play on the rain, cloud, PM2.5 and UV layers to see how they change
• Global UV index map for anywhere on earth, not only your own city
• UV on tilted, sun-facing skin, not only a flat horizontal surface
• UVA, UVB and visible-light charts
• Optional live weather and cloud adjustment
• Offline support with the most recently saved data

Use the app to plan walks, running, cycling, hiking, beach days, gardening, sport and travel, and other time outdoors, whether you are avoiding the sun or tanning in it. See when UV is strongest and plan shade, protective clothing and broad-spectrum sunscreen around the day's conditions, so a long afternoon out does not end in sunburn.

The weather layers allow you to see wind, rain, snow, cloud and air quality on the same globe as the UV reading, and check conditions anywhere in the world before you travel.

No subscription and no paywall. Every layer, forecast and chart is free, paid for by a single nonintrusive banner ad, never a full-screen or video ad. No account is required. Location permission is optional, and you can choose a city manually instead. Saved locations remain in the app's private on-device storage.

The values shown are modelled estimates from public forecast data, for education and personal planning. Conditions can change quickly; always follow local guidance and practise sun-safe behaviour. This app is not a medical device and does not diagnose, treat, cure, or prevent any medical condition. Consult a qualified healthcare professional for medical advice, diagnosis, or treatment.

Recent changes:
Added cloud and PM2.5 layers (a measure of air quality):