★ 4.846,000+ ratings worldwideiPhone, iPad & Apple Watch

UV Index Widget
Worldwide

The sun has a number — know yours. The one weather metric your skin actually cares about, front and center: live UV levels, hourly 7-day forecasts, and smart sunburn alerts, anywhere on Earth.

Get it on the App Store
7-dayhourly UV forecast
WHOstandard UV scale
Freeto download
The UV Index scale — a colored ring running from Low and Moderate through High and Very High to Extreme
The app's main view on iPhone: UV index 6.0 shown as a color-coded dial pointing at High, with a solar graph, clear-sky conditions and location at the top
The main view

Open the app, know the answer

No menus, no digging. The moment the app opens, the dial points at today's reality — and the whole view shifts color with the UV level, so you read the situation before you read a single number.

  • Color-coded UV dial — the current index on the WHO scale, from green Low to violet Extreme
  • Interactive solar graph — drag the sun across the day to see UV at any time, with 1-minute precision
  • Sky conditions & location — cloud cover is factored in, and sunrise, solar noon and sunset are right on the curve
  • Tap and hold — see today's peak UVI and exactly when it hits
Forecast

Plan the week around the sun

Seven days ahead, hour by hour. Each day gets a card with its peak UV and sky conditions, and a color-coded bar chart that shows exactly when the sun is friendly — and when it isn't.

  • Daily peak at a glance — "Very high peak UV, Mostly Clear" tells you the whole story before you look closer
  • Hour-by-hour bars — UVI for every hour, colored on the WHO scale, with cloud cover right on each bar
  • Any location on Earth — full forecasts for home, your next holiday, or anywhere in between
  • Your choice of data — Apple Weather by default, with other data sources one tap away
The Forecast tab on iPhone: daily cards for Charlotte showing peak UV of 9, 8 and 7 with sky conditions, each with an hour-by-hour color-coded UV bar chart from 08:00 to 19:00
The My Skin tab on iPhone: a sunburn-risk countdown of 55 minutes, protection-required advice for 11:00 to 16:00, sunscreen status with SPF 30 recommended, and a weekly Sun Sessions exposure chart
My Skin

Advice tuned to your skin, not the average one

Take the skin type quiz once, and the app does the math for you — factoring in your environment, cloud cover, and SPF.

  • Live sunburn-risk countdown and a clear protection window for the day — "moderate or higher UV from 11:00 to 16:00"
  • Sunscreen tracking with SPF recommendations and reapplication reminders
  • Sun Sessions: track time in the sun and see your total exposure logged across the week at a glance
  • Vitamin D production estimated from real sun exposure and synced to Apple Health
What it does

One number, everywhere you look

No digging through a weather app for the data that decides whether you burn. It's on your Home Screen, your Lock Screen, your wrist — and in your pocket for anywhere on Earth.

📊

Live UV, at a glance

The current UV Index in a clear, color-coded format. Tap and hold to see today's peak, sunrise, sunset, and exactly when UV tops out.

🗓

7-day hourly forecast

An hour-by-hour UVI prediction for the week ahead, so you can plan runs, hikes, and beach days around the sun — not against it.

🔔

Smart alerts

Set your UV threshold and get notified the moment levels cross it — up or down. Plus sunburn-risk warnings and sunscreen reapplication reminders with a Lock Screen Live Activity.

🧩

Widgets everywhere

Home Screen, Lock Screen, Today view, and Apple Watch complications — including the new Clear Mode. Pick the look that fits your setup.

🌍

Anywhere on Earth

Check the UV at any location worldwide with a full 7-day forecast. Know your destination's sun before you've packed the sunscreen.

❤️

Apple Health sync

Hourly UV exposure and estimated vitamin D production logged automatically to Apple Health, building a history you can actually review.

iPhone iPad Apple Watch
4.8 out of 5 stars
46,000+ ratings worldwide
★★★★★

"I've tried just about every UV index app in the app store… This app is thoughtfully designed and a pleasure to use. I paid for the pro features and would do it again in a heartbeat."

EmilyLMcC · App Store
★★★★★

"99% of my work day is spent outside… The amount of times I've been sun burnt has gone down a lot since finding this app."

App Store review · Ecology field worker
★★★★★

"Lots of apps have the UV index buried… This app brings one of the most useful pieces of weather data front and center so I can plan my day and track my exposure."

Richie510 · App Store

Your skin will thank you.

Free to download, works anywhere in the world, and follows the WHO international UV Index standard. Pro unlocks every widget and feature.

Download on the App Store

Requires iOS 16.4 or later · English, French, German, Japanese, Simplified Chinese & Spanish