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  UV Index

About this app

Here is a simple application that displays the current value of the ultraviolet index. This accurate measuring tool (portrait orientation, Android 6 or newer) works on the tablets, phones and smartphones that are connected to the Internet. At first, it gets the local coordinates (latitude and longitude) from your device's GPS and then retrieves the UV index from an Internet server. The value of this index is given according to the international standard and represents the strength of the sunburn-producing ultraviolet radiation at your location (its intensity at solar noon). However, the real UV index depends on many factors, such as: the angle of the Sun in the sky (current hour), stratospheric ozone, cloud conditions, air pollutants.  More important, you have to know that the reflection from snow or other bright surfaces like water, sand, or concrete can nearly double this index.

 

     

How it works

Once the application starts, the UV index is displayed within a few seconds. If your location changed since the last reading, an update can be made by pressing the GPS button (the left button); otherwise, the UV index corresponds to the previously stored location. The next button shows the recommended protection you must use, while the third one shows you the Pro version of this app (text to speech and hourly index for your location as additional, new features); the Information button shows you this description page.

 

     

 

Range and recommendations

 

to 2: (low risk, green) - this reading means low danger from the Sun's UV rays for the average person. You may wear sunglasses on bright days.

3 to 5: (moderate risk, yellow) - moderate risk of harm from unprotected Sun exposure. Stay in shade near midday when the Sun is strongest. If outdoors, wear Sun protective clothing, a wide-brimmed hat, and UV-blocking sunglasses.

6 to 7: (high risk, orange) - high risk of harm from unprotected Sun exposure. Protection against skin and eye damage is needed. Reduce time in the Sun between 10 a.m. and 4 p.m. If outdoors, seek shade and wear Sun protective clothing, a wide-brimmed hat, and UV-blocking sunglasses.

8 to 10 (very high risk, red) - high risk of harm from unprotected Sun exposure. Take extra precautions because unprotected skin and eyes will be damaged and can burn quickly. Minimize Sun exposure between 10 a.m. and 4 p.m. If outdoors, seek shade and wear Sun protective clothing, a wide-brimmed hat, and UV-blocking sunglasses.

11+ (extreme risk, violet) - extreme risk of harm from unprotected Sun exposure. Take all precautions because unprotected skin and eyes can burn in minutes. Try to avoid Sun exposure between 10 a.m. and 4 p.m. If outdoors, seek shade and wear Sun protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 1.5 hours

 

Key features

 

-- instant display of the UV index for your current location 
-- free application - no ads, no limitations
-- only one permission is required (Location)
-- this app keeps the phone's screen ON
-- the color of the Sun's surface follows the UV index

 

  UV Index Pro

About this app

 

UV Index Pro is a nice application that displays the maximum and the current values of the ultraviolet index. New features: text to speech and the graphic display of the current index versus time.