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Sunburn effect (as measured by the UV index) is the product of the sunlight power spectrum (radiation intensity) and the erythemal action spectrum (skin sensitivity) across the range of UV wavelengths. [9] [10] The UV index is a number linearly related to the intensity of sunburn-producing UV radiation at a given point on the Earth's surface.
Weather is a weather forecast app developed by Apple Inc., available on iOS since the release of the iPhone and iPhone OS 1 in 2007. [1] [2] It allows users to see the conditions, forecast, temperature, and other related metrics of the device's current location, as well as a number of other cities.
The WHO-standard ultraviolet index is a widely publicized measurement of total strength of UV wavelengths that cause sunburn on human skin, by weighting UV exposure for action spectrum effects at a given time and location. This standard shows that most sunburn happens due to UV at wavelengths near the boundary of the UVA and UVB bands.
Get the Moses Lake, WA local weather forecast by the hour and the next 10 days.
The UV index is not a measure of heat, and a higher UV index does not necessarily mean it's hotter outside. For example, the UV index can be higher on a 70-degree sunny day than it is on a 100 ...
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Locations can be added by pressing the list icon and the plus icon which allows the user to type in the city's name, ZIP Code or postal code or airport code. Weather also displays related metrics, such as the time of sunrise and sunset, humidity, chance of rain, visibility distance, and a UV index.
The first map at right shows levels of UVB radiation in June 2008, expressed in Vitamin D Equivalents. [26] UV map (Vitamin D Equivalents) Using satellite data, measurements from the European Space Agency produce similar maps expressed in units of the widely followed UV Index, for locations around the world. [27]