Ralph M Calhoun Memorial Airport UV IndexUnited StatesAKYukon-Koyukuk BoroughRalph M Calhoun Memorial Airport1-Day3-Day Graph Plots Open in Graphs UV Forecast NOAARalph M Calhoun Memorial Airport UV forecast issued yesterday at 11:17 am. Next forecast at approx. 11:17 am.Get WillyWeather+ to remove ads