How To Use The Index
Recommendations for protection when the day's predicted UV Index is at various values are:
| UV Index | Description | Media Graphic Color | Recommended Protection |
| 0–2 | Low danger from the sun's UV rays for the average person | Green | Wear sunglasses on bright days; use sunscreen if there is snow on the ground, which reflects UV radiation, or if you have particularly fair skin. |
| 3–5 | Moderate risk of harm from unprotected sun exposure | Yellow | Take precautions, such as covering up, if you will be outside.
Stay in shade near midday when the sun is strongest. |
| 6–7 | High risk of harm from unprotected sun exposure | Orange | Wear sunglasses and use SPF 30+ sunscreen, cover the body with sun protective clothing and a wide-brim hat, and reduce time in the sun from three hours before to three hours after solar noon (roughly 10:00 to 16:00 during summer in zones that observe daylight saving time). |
| 8–10 | Very high risk of harm from unprotected sun exposure | Red | Wear SPF 30+ sunscreen, a shirt, sunglasses, and a hat. Do not stay out in the sun for too long. |
| 11+ | Extreme risk of harm from unprotected sun exposure | Violet | Take all precautions, including: wear sunglasses and use SPF 30+ sunscreen, cover the body with a long-sleeve shirt and trousers, wear a very broad hat, and avoid the sun from three hours before until three hours after solar noon (roughly 10:00 to 16:00 in zones that observe daylight saving time). |
Read more about this topic: Ultraviolet Index
Famous quotes containing the word index:
“Exile as a mode of genius no longer exists; in place of Joyce we have the fragments of work appearing in Index on Censorship.”
—Nadine Gordimer (b. 1923)