average uv index by country

The UV Index provides a forecast of the expected risk of overexposure to UV radiation from the sun. Slip on a shirt, slop on sunscreen and slap on hat! WebThe Earth's orbit also brings countries in the southern hemisphere (Australia included) closer to the sun in summertime than countries in the northern hemisphere during summer. Capable of causing a severe sunburn in under 10 minutes, it is advised that you take all precautions possible to limit your exposure to the sun at this UV rating. UV index July. To inform people about the risk one can expect from UV rays, the National Weather Service and the U.S. [24] In the same year, a survey among meteorologists ranked the development of the UV index as #11 on The Weather Channel's 100 Biggest Weather Moments. clothing, hat and sunglasses, shade and sunscreen. Global Solar UV Index What Climate Change Means for Glaciers, Storms, Fires, Clouds, and More. However, sunscreen represents a last line of defence, and should never be used to prolong the duration of sun exposure. UV Index [12] When the index was designed, the typical midday summer sunlight was around 250mW/m2. As our ozone layer continues to thin, the amount of UV exposure will only increase in these regions, resulting in worse health outcomes for the people living in these warmer climates. NASA Earth Observations is part of the EOS Project Science Office located at NASA Goddard Space Flight Center Avoid being outside during midday hours! UV radiation is generally lower during the winter months, but snow reflection can double your overall exposure, especially at high altitude. A UV index reading of 11 or more means extreme risk of harm from unprotected sun exposure. Predictions are made by a computer model that By using our site, you consent to, Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported CC BY-NC-SA 3.0. So as we can see, the top 20 countries are quite dispersed across the globe. Provisions for buildings and workplaces. In the short-term, skin exposed to UV rays can burn. The values of the index range from zero upward - the higher the UVI, the greater the potential for damage to the skin and eye, and the less time it takes for harm to occur. To installthe widget on your page:https://www.epa.gov/developers/data-data-products-envirofacts-uv-index-widget. Indices of 9 and 10 are common in the Mediterranean area. WebUV Index worldwide. Protection against skin and eye damage is needed. The suns rays become stronger as you move south, and in the tropics, the index can rise to 14 or higher. Long-term effects of UV radiation exposure of the eye may include the development of pterygium (white or creamy opaque growth attached to the cornea), and squamous cell cancer of the conjunctiva. [14], After sporadic attempts by various meteorologists to define a "sunburn index" and growing concern about ozone depletion, Environment Canada scientists James B. Kerr, C. Thomas McElroy, and David I. Wardle invented the modern UV index in Toronto, Ontario. Effects of ultraviolet (UV) radiation on the skin, eye and the immune system, Radiation: The known health effects ofultravioletradiation, Ultraviolet (UV) radiation and skin cancer, Global solar UV index : a practical guide. Minimize sun exposure between 10 a.m. and 4 p.m. Biological effects due to energy absorption and heating, Other possible biological effects, IARC evaluation of high-frequency fields, Radiation protection in mobile communication, High-frequency electromagnetic fields, Specific Absorption Rates (SAR) for mobile phones. Thus UV radiation levels vary with time of day and time of year. The UV index is a measure of the amount of ultraviolet radiation reaching the earths surface. Migration patterns over the past few hundred years have created a scenario in which most people's skin pigmentations are no longer suited to their environments. The specified UV Index values serve as a benchmark for a typical atmospheric condition at each respective location. WebThe UV index forecast for Ireland is sourced by Deutscher Wetterdienst and is included in our regional forecasts from May to September but be aware it can only be an average for any one day over the entire country. The UVI is an international standard index that describes the level of solar UV radiation on the earths surface. Using this item and referring to it is encouraged, and please use Heraklion, Greece has an average UV index of 12. Try to avoid sun exposure between 10 a.m. and 4 p.m. U.S. January Solar DNI Average. The UV Index is accompanied by recommendations for sun protection and is a useful tool for planning An index of 10 corresponds roughly to midday summer sunlight with a clear sky when the UV index was originally designed; now summertime index values in the tens are common for tropical latitudes, mountainous altitudes, areas with ice/water reflectivity and areas with above-average ozone layer depletion. This means that there is a high risk of skin damage from prolonged exposure to sunlight. June. UV index it in presentations, web pages, newspapers, blogs and reports. UV levels Step 2: Check out the recommended sun protection. Wear protective clothing.Wear a broad brimmed hat to protect the eyes, face and neck. The most common types of non-melanoma skin cancers are basal cell carcinomas and squamous cell carcinomas, both of which have a lower mortality rate than melanoma (1). Predictions are made by a computer model that Table 1 below shows the average UV Index (UVI) levels for regions across New Zealand and Australia based on latitude. May. The higher the Index value, the greater the potential for damage to the skin and eye, and the less time it takes for harm to occur. If outdoors, seek shade and wear sun-protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Stay in shade near midday when the Sun is strongest. Indices of 9 and 10 are common in the Mediterranean area. Sunlight/UV Vulnerability and Preparedness The UVI gives an indication of the level of UV radiation and the potential danger of sun exposure. Out of the 50 holiday hotspots, Sri Lanka has the most dangerous radiation level, with an average score of 11.75[4]. Africa; The UV Index does not drop below 11 at any point in the year, which means that there is a constant and extreme risk of harm. Figure 4. WebThe Global Solar UV Index (UVI) is a simple measurement of the UV radiation level at the Earth's surface. Make sure you seek shade! When the day's predicted UV index is within various numerical ranges, the recommendations for protection are as follows:[18][27]. Two battles need to be fought to successfully achieve this goal: personal/cultural mindset changes and international action. A UV index reading of 6 to 7 means high risk of harm from unprotected sun exposure. UV rating 6-7 This high UV index level can result in a sunburn in 15-25 minutes. Current evidence indicates that personal habits in relation to sun exposure constitute the most important individual risk factor for UV radiation damage. The levels of UV radiation and therefore the values of the index vary throughout the day. By making global pledges to reduce the use of ozone-depleting substances, the world's leading countries can decrease our impact on the ozone layer, and in turn, reduce skin cancer cases. What is the coldest month in Auckland? Take all precautions because unprotected skin and eyes can burn in minutes. You cant get sunburnt while in the water. Moderate mean UVI values occur between 30 and 48 N and high UVI south of 35 N. Additionally, very high mean UVI up to 7.8 are detected south of 32 N. Figure 3. The Global Solar UV Index (UVI) described in this document is a simple measure of the UV radiation level at the Earths surface and an indicator of the potential for skin damage. As UV radiation can neither be seen nor felt, it is important to provide a tool to raise awareness of the problem and alert people on a daily basis to take prompt, appropriate, protective action. [4] Therefore, under similar conditions, a person who develops a sunburn after 30 minutes of exposure to UV index 6 radiation would most likely develop a sunburn after 15 minutes of exposure to UV index 12 radiation, since it is twice the intensity but half the duration. It also provides time slots when to apply sun protection measures, in an effort to reduce the global burden of skin cancer and UV-related eye damage. It is important to note that while those with darker skin tones have a lower risk of developing skin cancers, the risk is never zero. A higher index value indicates a greater potential for harmful effects to the skin and eyes. If outdoors, wear sun-protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. On Dec. 29, 2003, a world-record UV index of 43.3 was detected at Bolivia's Licancabur volcano. The UV Index does not drop below 11 at any point in the year, which means that there is a constant and extreme risk of harm. April. Monthly mean UVI at the local noon over Europe for January until June over the time period 19832015 based on satellite data. UV Index and why could it break Toggle navigation. WebThe monthly average maps use the same color scale and class breaks as the annual average map for the contiguous United States for the purpose of showing monthly variation relative to the annual average. [18], On December 29, 2003, a world-record ground-level UV index of 43.3 was detected at Bolivia's Licancabur volcano,[19][20] though other scientists dispute readings higher than 26.[21]. TheGlobal Solar UV Index is intended to be used by national and local authorities and non-governmental organizations active in the area of skin cancer prevention, as well as meteorological offices and media outlets involved with UVI reporting. As the rays interact with the cells in our skin, they cause disruptions and damage to the cells DNA. These address different target audiences such as occupationally exposed people, tourists, school children and the general public. To best protect yourself, it is recommended that people avoid any sun exposure from 10 am - 2 pm when the risk for high UV exposure is at its highest. UV-Index Climatology for Europe Based on How can meteorological offices, national authorities and media use the UV index? The Global Solar UV Index (UVI) is a simple measurement of the UV radiation level at the Earth's surface. WebThe UV index forecast for Ireland is sourced by Deutscher Wetterdienst and is included in our regional forecasts from May to September but be aware it can only be an average for any one day over the entire country. UV Index The UV Index is an important vehicle to raise public awareness of the risks of excessive exposure to UV radiation, and to alert people about the need to adopt protective measures. This indicator provides state-level data on laws regarding sunscreen use in schools and indoor tanning restrictions for individuals younger than 18 years. Exposure to solar ultraviolet (UV) radiation Data by country You are here: By category; Public health and environment; Ultraviolet (UV) radiation; Exposure to solar ultraviolet (UV) radiation; Regions. Submit your comment here. However, higher UV Index values may occur due to the variability of the influence parameters (e.g. For example, assuming similar spectral power distributions, radiation with a UV index of 12 is twice as intense as radiation as a UV index of 6. While the idea of having tanned skin is incredibly popular in Westernized countries like the United States, Canada, and the United Kingdom, other countries have different popular opinions on what is considered to be culturally attractive. The index is a scale of 0 to 16+, with 0 representing minimal UV exposure risk and values higher than 11 posing an extreme risk. A special, https://www.epa.gov/developers/data-data-products-envirofacts-uv-index-widget, Download the free UV Index smartphone app. It can help individuals make healthy choices. Even for very sensitive fair-skinned people, the risk of short-term and long-term UV damage below a UVI of 2 is limited, and under normal circumstances no protective measures are needed. January. The UV index values are grouped into five Exposure to solar ultraviolet (UV) radiation Typical UV Index values for a range of cities worldwide are specified for the 21st of each month based on calculations with the radiation transfer model STAR. This indicator provides state and county level data on monthly and annual average doses of UV irradiance measured daily and at noon. 20 Skin Cancer Hot Spots In The A tan results from your body defending itself against further damage from UV radiation. Unsurprisingly, climate change is not having a positive effect on skin cancer trends around the world. [7], When the UV index is presented on a daily basis, it represents UV intensity around the sun's highest point in the day, called solar noon, halfway between sunrise and sunset. Toggle navigation. What are static and low-frequency electric and magnetic fields? Sunlight Exposure In countries close to the equator, the UVI can reach up to 20. A dark tan on white skin only offers an SPF of about 4. The higher the Index value, the greater the potential for damage to the skin and eye, and the less time it takes for harm to occur. Ultraviolet Index Share sensitive information only on official, secure websites. From collection: Vital Ozone Graphics 2.0 - Climate Link, Cartographer: Unless protective clothing and sunglasses are worn, skin and eyes can be damaged in minutes, A marked increase in the incidence of skin cancer in fair-skinned populations worldwide is strongly associated with excessive UV radiation exposure from the sun and possibly artificial sources such as sunbeds. With these numbers trending upwards over the past 25 years, skin cancer is starting to take a serious toll on the health of our global population (2). What factors affect the level of UV radiation? Ultraviolet Index The values of the index range from zero upward - the higher the UVI, the greater the potential for damage to the skin and eye, and the less time it takes for harm to occur. Because of the cultural value of fair skin, no Asian countries place in the skin cancer top twenty list, despite their geographical location and average higher UV indexes. UV-Index Climatology for Europe Based on Click the buttons for Day 2, Day 3, or Day 4 to see the UV Index forecast for following days. Some ZIP Codes may not be in our database. March. Based on a skin chart created by the World Health Organization (WHO), there are six different skin types, each with different risk levels for experiencing UV damage (10). With some countries like Australia and New Zealand reporting incredibly high average UV index levels, others like Norway and Denmark still have cases despite having much lower UV values. The UV index is used to forecast the strength of the sun's ultraviolet rays. The UVI is an important vehicle to alert people about the need to use sun protection. Indices of 9 and 10 are common in the Mediterranean area. National Weather Service provides the following UVIndex archives: The UV Index provides a forecast of the expected risk of overexposure to UV radiation from the sun. It is advised that people limit their time in the sun at this UV index rating. Moderate mean UVI values occur between 30 and 48 N and high UVI south of 35 N. Additionally, very high mean UVI up to 7.8 are detected south of 32 N. Figure 3. However, higher UV Index values Auckland, New Zealand - Climate & Monthly weather forecast UV radiation levels vary throughout the year and throughout the country according to: About the UV index Those with darker skin (Type IV+) are more likely to withstand greater sun exposure, while extra precautions are needed for children, seniors, particularly fair-skinned adults, and those who have greater sun sensitivity for medical reasons[26] or from UV exposure in previous days. Integration of these values using all the intermediate weightings over the full spectral range of 290nm to 400nm[13] produces a figure of 264mW/m2 (the DUV), which is then divided by 25mW/m2 to give a UV index of 10.6. JavaScript appears to be disabled on this computer. Understand how solar radiation levels are changing across geography and time.

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