Knowledge Base
FAQ & Knowledge Base How does OpenUV API work? The clear sky UV Index at sea level is first calculated from the solar zenith angle (SZA) and from ozone forecast fields and based on a math model firstly published by The National Institute of Water and Atmospheric Research (NIWA) of New Zealand. The raw UV Index then factored by elevation (optional) and sun-to-earth distance. The ozone level data is based on global near-real-time OMTO3e product from OMI Instrument installed on AURA Satellite, NASA. Fitzpatrick Skin Types & Safe Exposure Time Calculation The most commonly used scheme to classify a person’s skin type by their response to sun exposure in terms of the degree of burning and tanning was developed by Thomas B. Fitzpatrick, MD, PhD. As a meter of fact even the skin color of Emoji characters based on the Fitzpatrick scale. How to get UV Index for a specific time? Use the dt request parameter to obtain estimated UV Index value for any point in time (hours, days, months, ye