Green Island - Gibbon Anchorage UV IndexUnited StatesAKValdez-Cordova BoroughGreen Island - Gibbon Anchorage1-Day3-Day Graph Plots Open in Graphs UV Forecast NOAAGreen Island - Gibbon Anchorage UV forecast issued yesterday at 11:18 am. Next forecast at approx. 11:18 am.Get WillyWeather+ to remove ads