Less than 3: Low
A UV Index reading of less than 3 means low danger from the sun's UV rays for the average person:
Wear sunglasses on bright days. In winter, reflection off snow can nearly double UV strength.
If you burn easily, cover up and use sunscreen.
Look Out Below
Snow and water can reflect the sun's rays. Skiers and swimmers should take special care. Wear sunglasses or goggles, and apply sunscreen with an SPF of at least 15. Remember to protect areas that could be exposed to UV rays by the sun's reflection, including under the chin and nose.
Source: US Environmental Protection Agency
3 - 6: Moderate
A UV Index reading of 3 to 6 means moderate risk of harm from unprotected sun exposure.
Take precautions, such as covering up, if you will be outside.
Stay in shade near midday when the sun is strongest.
Me and My Shadow
An easy way to tell how much UV exposure you are getting is to look for your shadow:
If your shadow is taller than you are (in the early morning and late afternoon), your UV exposure is likely to be low.
If your shadow is shorter than you are (around midday), you are being exposed to high levels of UV radiation. Seek shade and protect your skin and eyes.
Source: US Environmental Protection Agency
6 - 8: High
A UV Index reading of 6 to 7 means high risk of harm from unprotected sun exposure. Apply a sunscreen with a SPF of at least 15. Wear a wide-brim hat and sunglasses to protect your eyes.
Protection against sunburn is needed.
Reduce time in the sun between 11 a.m. and 4 p.m.
Cover up, wear a hat and sunglasses, and use sunscreen.
Made in the Shades
Wearing sunglasses protects the lids of your eyes as well as the lens.
Source: US Environmental Protection Agency
Move your mouse over the thermometer in order to reveal information about the impact of UV radiation on you or your family.
8 - 10: Very High
A UV Index reading of 8 to 10 means very high risk of harm from unprotected sun exposure. Minimize sun exposure during midday hours, from 10 a.m. to 4 p.m. Protect yourself by liberally applying a sunscreen with an SPF of at least 15. Wear protective clothing and sunglasses to protect the eyes.
Take extra precautions. Unprotected skin will be damaged and can burn quickly.
Try to avoid the sun between 11 a.m. and 4 p.m. Otherwise, seek shade, cover up, wear a hat and sunglasses, and use sunscreen.
Stay in the Game
Be careful during routine outdoor activities such as gardening or playing sports. Remember that UV exposure is especially strong if you are working or playing between the peak hours of 10 a.m. and 4 p.m. Don't forget that spectators, as well as participants, need to wear sunscreen and eye protection to avoid too much sun.
Source: US Environmental Protection Agency
UV Radiation Levels
Place your mouse over this text to see yesterday's peak level & time
11+: Extreme
A UV Index reading of 11+ means extreme risk of harm from unprotected sun exposure. Minimize sun exposure during midday hours, from 10 a.m. to 4 p.m. Apply sunscreen with an SPF of at least 15 liberally every 2 hours.
Take all precautions. Unprotected skin can burn in minutes. Beachgoers should know that white sand and other bright surfaces reflect UV and will increase UV exposure.
Avoid the sun between 11 a.m. and 4 p.m.
Seek shade, cover up, wear a hat and sunglasses, and use sunscreen.
Beat the Heat
If possible, stay indoors on days when the UV Index is very high. Take the opportunity to relax with a good book rather than risk dangerous levels of sun exposure. Try not to pursue outdoor activities, whether at work or at play, unless protected with sunscreen, hat, and sunglasses.
