Weather Summary	. How to use   UV INDEX
UV Index	Description	Media Graphic Colour	Recomended Protection
0-2	No danger to 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	Little risk of harm from unprotected sun exposure	Yellow	Wear sunglasses and use SPF 30+ sunscreen, cover the body with clothing and a hat, and seek shade around midday when the sun is most intense.
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 two hours before to three hours after solar noon (roughly 11:00 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 two hours before to three hours after solar noon (roughly 11:00 to 16:00 during summer in zones that observe daylight saving time).
Cautionary notes Be aware when interpreting the UV index and recommendations that: The intensity of UV radiation reaching the surface of the earth varies depending on how high the angle of the sun is in the sky. The sun reaches its highest angle at solar noon, which rarely corresponds to 12:00 on clocks. This is because of the differences between solar time and local time in a given time zone. The recommendations given are for adults with pale to lightly tan skin. Children and particularly fair-skinned people or those who have sun sensitivity for medical reasons need to take extra precautions. Damage from sun exposure is cumulative over one's lifetime. Cumulative exposure to the sun imparts damage to the epidermis (the outer layer) and the dermis, (the deeper layer where the skin's framework exists). Damage to the dermal layer changes the structural components, causing elastin fibers to thicken and become more numerous. Collagen is damaged and degraded and reticulin fibers appear throughout the dermis rather than outlining the specific dermoepidermal junction.