EPA's SunWise UV Index

EPA's SunWise UV Index

by Environmental Protection Agency

67 ratings
61 reviews
#169 in free Weather
☀️ Weather
Free

Details

  • Released
  • Updated
  • September 22, 2011
  • December 13, 2022

Features

EPA's SunWise UV Index screenshot #1 for iPhone
EPA's SunWise UV Index screenshot #2 for iPhone
EPA's SunWise UV Index screenshot #3 for iPhone
EPA's SunWise UV Index screenshot #4 for iPhone
EPA's SunWise UV Index screenshot #5 for iPhone
EPA's SunWise UV Index screenshot #6 for iPhone
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About

This app provides daily and hourly forecasts of the sun's ultraviolet (UV) radiation intensity. It offers sun safety tips to help users plan outdoor activities and protect themselves from harmful UV exposure, which can lead to sunburn, skin cancer, and cataracts.

Daily UV Index forecast
Hourly UV Index forecast
Sun safety tips
Outdoor activity planning
UV radiation intensity information
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What's New in EPA's SunWise UV Index

7.0.0

December 13, 2022

Updated the user interface, improved choosing to get your forecast by your current location.

Charts

Top Free

📊 169

Weather

The app has maintained its position at 169 recently.

Last updated on July 12, 2026.

User reviews

Not great

Glitchy and not well coded at all. Location does nothing. Interface is janky. Other apps do this far better and it’s not their only focus. Not recommended unless they hire competent coders. Not the case currently.

Broken

Stopped working

No longer working

No longer able to use this app. It will not post the current UV or hourly UV.

Lots of room for improvement

The app has some good information that can give you an accurate baseline, but it certainly has LOTS of room for improvement. Other than your location, there are ZERO personal factors taken into account. That might work well for some people, but I’m a natural redhead with light blue eyes and an extremely pale complexion, living in southern Florida, and I need an app that takes that into account. I read through all the EPA’s UV calculations, which consider wavelength, elevation, angle of the sun, ozone depletion, cloud cover, etc, but then only use some unknown “average” to calculate the sensitivity of human skin. Why bother being so accurate with your locational calculations to then turn around and assume every person is exactly the same? I really wish the EPA would realize that people are also as unique as locations, and that absolutely NEEDS to be taken into account.
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No notifications

Unfortunately there doesn’t seem to be a way to configure notifications when the UV is about to go over a certain chosen level. Additionally the data appears to sometimes be unavailable.

Developer apps

FAQ

What does the SunWise UV Index app do?

The app provides daily and hourly forecasts of the sun's ultraviolet (UV) radiation intensity. It also offers essential sun safety tips to help users plan their outdoor activities while minimizing the risk of sun damage.

What are the key features of the SunWise UV Index app?

Key features include daily and hourly UV Index forecasts, providing users with information on expected UV radiation intensity. It also offers practical sun safety advice, such as recommendations for sunscreen, hats, and sunglasses.

Is the SunWise UV Index app free to use?

Yes, the app is completely free to use. It does not have any in-app purchases or advertisements, making it accessible for everyone seeking to protect themselves from the sun.

Who is the target audience for this app?

The app is designed for anyone who spends time outdoors, regardless of skin type. It is particularly useful for individuals concerned about the immediate and long-term health risks associated with overexposure to the sun's UV radiation.

How can this app help me plan my outdoor activities?

By providing a forecast of UV radiation intensity, the app helps you understand when the sun's rays will be strongest. This allows you to schedule outdoor activities during safer times or take necessary precautions, like seeking shade or applying sunscreen.