What is the highest UV index ever recorded?

On Dec. 29, 2003, a world-record UV index of 43.3 was detected at Bolivia’s Licancabur volcano. The UV index is used to forecast the strength of the sun’s ultraviolet rays.

Is 11 UV Index bad?

8 to 10 means very high risk. Take extra precautions because unprotected skin and eyes will be damaged and can burn quickly. A UV Index reading of 11 or more means extreme risk of harm from unprotected sun exposure.

What country has the harshest sun?

Australia – where the Sun hits the hardest
Look at the bright red spots in the Pacific, mid-Atlantic and Australia where irradiance (the power of solar radiation) is highest.Australia receives much more solar radiation than California or even the Mediterranean famed for its sunny summers and beautiful beaches.

The time to burn can vary by skin type, but at a low UV level it is approximately 60 minutes. A UV Index reading between 3 and 5 means there is a moderate risk of sunburn for the average person. The time to burn can vary by skin type, but at a moderate UV level it is approximately 30 to 45 minutes.

Can you tan through clouds?

Yes, tanning through clouds is possible. It does not matter how cloudy, hazy, or even rainy the day is there is still a chance of getting a tan, and even worse, a burn. Thick grey or black clouds will absorb some of the rays and not allow as much UV light through, but some will still get through and into your skin.

A UV Index reading of 0 to 2 means low danger from the sun’s UV rays for the average person. Wear sunglasses on bright days. If you burn easily, cover up and use broad spectrum SPF 30+ sunscreen. Watch out for bright surfaces, like sand, water and snow, which reflect UV and increase exposure.

What is a safe UV level?

UV Index 3-5 means low risk of harm from unprotected sun exposure. UV Index 6-7 means moderate risk of harm from unprotected sun exposure. UV Index 8-10 means high risk of harm from unprotected sun exposure.

What UV is best for tanning?

Good UV Index for tanning
UV Index 0 – 2. Low exposure level. Average time it takes to burn: 60 minutes. UV Index 3 – 5. Moderate exposure level. Average time it takes to burn: 45 minutes. UV Index 6 – 7. High exposure level. UV Index 8 – 10. Very high exposure level. 11+ UV Index. Extreme exposure level.

Your skin needs both UVA and UVB light to tan. Moderate includes UV index ranges from an index of 3 to 5, vs. high which is 6-7, very high which is 8-10 and extreme which is 11+.

Does UV Index include UVA?

The Ultra Violet Radiation Index (UVI) has been around for more than 20 years and gives a measure of the intensity of the sun, using both UVA and UVB.

Do you need to wear sunscreen if the UV Index is 0?

Sun protection measures, such as wearing sunscreen, should always be taken when the UV index is 5 or above. The UV index is measured on a scale of 0 to 11+. 0 to 2: Low exposure to UV rays is expected for that day. Wear UV-blocking sunglasses on bright days, and cover up your skin if it burns easily.

Do I need to wear sunscreen when UV Index is 1?

Whether the UV Index is 1 or 5, you should always wear a broad spectrum sunscreen of at least SPF 30. But when the UV Index is above 5, you’ll want to take extra precautions. You should do this at least every two hours (or more frequently if the UV Index is high).

A UV Index of 11+ (Extreme) means there is a very high risk of harm from unprotected sun exposure. Fair skin people may burn in less than 5 minutes. Outdoor workers and vacationers who can receive very intense sun exposure are especially at risk.

How high can the UV Index get?

The UV Index divides UV radiation levels into: low (1-2) moderate (3-5) high (6-7)

Which country has lowest UV index?

In contrast, the safest countries are found in Scandinavia, with Finland boasting the lowest average (2.17) and Sweden (2.25), Norway (2.25) and Denmark (2.67) not far behind.

Why is there no ozone layer in Australia?

The ozone layer is depleted in two ways. Firstly, the ozone layer in the mid-latitude (e.g. over Australia) is thinned, leading to more UV radiation reaching the earth. Secondly, the ozone layer over the Antarctic, and to a lesser extent the Arctic, is dramatically thinned in spring, leading to an ‘ozone hole’.

Season of the year: UV rays are stronger during spring and summer months. This is less of a factor near the equator. Distance from the equator (latitude): UV exposure goes down as you get farther from the equator. Altitude: More UV rays reach the ground at higher elevations.