Columbia River - Multnomah Channel Entrance UV IndexUnited StatesORColumbia CountyColumbia River - Multnomah Channel Entrance1-Day3-Day Graph Plots Open in Graphs UV Forecast NOAAColumbia River - Multnomah Channel Entrance UV forecast issued today at 12:17 pm. Next forecast at approx. 12:17 pm.Get WillyWeather+ to remove ads