Wolfram|Alpha

Computing...

Input interpretation:

UV forecast


Result for Ashburn, Virginia:

UV index | 0\n(based on forecast for 2 am EDT on August 20, 2017)


Typical time to sunburn:

skin type |   |   |   |   |  \nI\n | II\n | III\n | IV\n | V\n | VI\n\n6.5 h | 6.5 h | 7 h | 7.5 h | 7.5 h | 8.5 h\n(times from 1:58 am EDT on August 20, 2017)


Sun protection advisory:

(no sun protection needed)