Isle Au Haut - Merchants Cove UV IndexUnited StatesMEKnox CountyIsle Au Haut - Merchants Cove1-Day3-Day Graph Plots Open in Graphs UV Forecast NOAAIsle Au Haut - Merchants Cove UV forecast issued today at 2:18 pm. Next forecast at approx. 2:18 pm.Get WillyWeather+ to remove ads