Weather Maps

THE UV INDEX

UV Index is a number expressing the harm risk degree of the Ultra Violet sun radiation. The Ultra Violet sun radiation constitutes a small fractal of the UV spectrum that reaches the surface of the earth. In spite of its’ relatively small intention, UV radiation can cause significant issues (especially in the eyes and skin) in humans and other species, it they are exposed in direct sunlight for prolonged periods. During the morning and the afternoon hours the UV index has smaller values, representing the relatively smaller UV Radiation hazard. The highest UV values in the region during the summer time may reach up to the value of 10 or 11, values representing extremely active radiation, calling for immediate protection from the sun.

UV index ranges from 1 to 11+, 1 denoting relatively “small” danger from the direct exposure to sunlight, while 11+ denoting “extremely high” danger.

Harm Risk

UV Index	Rating	Description	Recommended Protection
1-2.9	Low	No danger to the average person.	You can safely stay outdoors with minimal protection. Wear sunglasses on bright days; use sunscreen if you have particularly fair skin
3.0-5.9	Moderate	Little risk of harm from unprotected sun exposure	The level of UVR may cause skin damage. 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.
6.0-7.9	High	High risk of harm from unprotected sun exposure	The level of UVR can cause skin damage. 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 AM to 4:00 PM during summer in zones that observe daylight saving time).
8.0-10.9	Very High	Very high risk of harm from unprotected sun exposure	The level of UVR is high and dangerous. Wear SPF 30+ sunscreen, a shirt, sunglasses, and a hat. Do not stay out in the sun for too long. If you must be outside avoid the sun from two hours before to three hours after solar noon (roughly 11:00 AM to 4:00 PM during summer in zones that observe daylight saving time).
11+	Extreme	Extreme risk of harm from unprotected sun exposure	The level of UVR is at its highest and most dangerous. 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 Avoid the sun from two hours before to three hours after solar noon unless absolutely necessary, (roughly 11:00 AM to 4:00 PM during summer in zones that observe daylight saving time) Exposure to sunlight should be avoided. Sensitive individuals and children should stay indoors.