Unprotected UV exposure from the sun is the #1 cause of skin aging and skin cancer!

Sun Risk lets you check the risk to your skin right on your iPhone and iPad!

Sun Risk shows you the forecast for ultraviolet radiation levels throughout the day. (the UV index)

Sun Risk is different than most UV apps, as it is carefully designed with simplicity in mind. Sun Risk is designed and built to do a single thing really well: showing you the risk of sunburn.

• See the hourly and daily risk of sunburn UV exposure in any U.S. city.
• Easily see the risk at a glance, with Sun Risk's beautiful bright colors and simple layout.
• UV forecasts provided by NOAA and the EPA.
• Includes Sun Risk widget; check the risk right on your lock screen!
• Includes Sun Risk Apple Watch app; check the risk right on your wrist!

Featured by Apple on the front page of the App Store! - 2015


Have questions, need help, or have a great suggestion? I’d love to hear from you!
Email -
Twitter - @sunriskapp
Web -

What’s New

Version 3.1.2

Fixed error causing UV server to never be reached.
Turns out the EPA had updated their URL and I didn't realize until now. :P
Sorry for any frustration or inconvenience this may have caused!

Ratings and Reviews

3.4 out of 5
16 Ratings

16 Ratings

Ml 2384/23 ,

Good app if it was more reliable

The app when it works is pretty good. The integration with he Apple Watch allows you to see the uv index at a glance. The main issue is that it can reach the server half the time. A good app if you only need it to work occasionally

o:KD ,

Please Implement Burn Time!

I’ve downloaded and researched all the UV index apps, and this one certainly looks and works the best on the Apple Watch. Love the Watch Face Complication that displays the current UV Index. My only problem is that this app does not have a feature for calculating burn time based on skin tone. Seeing as how this is a Watch App, it sure would be nice to know how long one can spend in the sun at that current time...then you could just start a timer to let you know when to find some shade/apply sunscreen. This app is so close to being 5 Star, it just needs this one last feature and it would be the ONLY UV app anyone would ever need.

bokehcat_ ,

Please bring Watch support back!

The latest version of this app is a major improvement to the phone experience. UV data loads quickly and reliably (yay!), and the design is great. A huge thanks to the developer for the upgrade!

Unfortunately, the main reason I used this app was the Watch complication! Even though it didn’t update reliably, it was still really useful when it did – I hadn’t found a better UV complication out there. I’ll get used to taking my phone out to check the UV index in the meantime, but I’m looking forward to the return of Watch support, especially if it’s as reliable as the phone app is now. :)


Interface Labs LLC
28.8 MB

Requires iOS 10.3 and watchOS 4.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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