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 yesterday at 10:05 pm. Next forecast at approx. 10:05 pm.Get WillyWeather+ to remove ads