THE UV INDEX,
IN REAL TIME.

Sunly shows the live UV index for your exact location and a full 7-day forecast, then turns it into a safe-exposure window tuned to your skin type. Know exactly when to go out and when to cover up.

Free to download for iPhone and Android.

More than just a number

Live, location based

The current UV index for exactly where you are, refreshed through the day so it always reflects the conditions outside.

7-day forecast

An hour-by-hour view for today and a week ahead, so you can plan around the days and hours the sun is strongest.

Your safe window

Sunly turns the index into minutes of safe exposure for your skin type and sunscreen, plus alerts when the UV climbs too high.

Reading the UV index

1

Check the number before you head out

0 to 2 is low, 3 to 5 is moderate, 6 to 7 is high, 8 to 10 is very high, and 11 or more is extreme. The higher it is, the faster unprotected skin burns.

2

Use your safe window, not a guess

Two people can stand in the same UV and burn at very different speeds. Sunly factors in your skin type so the time it gives you is yours, not a generic average.

3

Plan the strong hours around midday

UV usually peaks in the few hours around solar noon. Use the hourly view to shift runs and beach time to gentler parts of the day.

4

Let Sunly watch it for you

Start a sun session and Sunly tracks your real exposure and reminds you to reapply sunscreen or seek shade, so you do not have to keep checking.

Want more? Read the UV index explained, or see how Sunly handles safe tanning and sunscreen reminders.

Frequently asked questions

What is a good UV index to be outside?
A UV index of 0 to 2 is low and generally safe with minimal protection. From 3 upward, unprotected skin can start to burn, and the higher the number the faster it happens. Sunly turns the raw index into a safe-exposure window for your specific skin type, so you know how long you actually have.
How accurate is the UV index in Sunly?
Sunly pulls real-time and forecast UV index data for your exact location and updates it through the day. It then personalizes the safe window and reminders to your skin profile, so the guidance reflects both the conditions and your skin.
Can I see the UV index for the week ahead?
Yes. Sunly shows an hour-by-hour view for today plus a full 7-day UV forecast, so you can plan beach days, runs, and trips around the days the sun is strongest.
Does the UV index tracker work without an account?
Yes. Sunly works without an account. It uses your location only to fetch UV data for your area, and you can also add locations manually instead of sharing your live location.

ENJOY THE SUN.
SKIP THE BURN.

Free to download. Set up your skin profile and get your first UV forecast in under a minute.

Coming soon to the App Store.