Check out the Nasa Satellite Situation Center API.
OpenUV - Global Real-Time UV Index Forecast
The OpenUV Global UV Index Forecast API in JSON format provides Ultraviolet Radiation index data in real time. With the API, developers can build wearable apps, bots, and smart home assistants, based on data provided by The Royal Netherlands Meteorological Institute (KNMI), The National Institute of Water and Atmospheric Research (NIWA) of New Zealand, Ozone data from OMI datasets, AURA Satellite, and NASA. It includes JSON responses and API Key.
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