Patapsco River - Fort McHenry Anchorage UV IndexUnited StatesMDBaltimore CityPatapsco River - Fort McHenry Anchorage1-Day3-Day Graph Plots Open in Graphs UV Forecast NOAAPatapsco River - Fort McHenry Anchorage UV forecast issued today at 1:05 am. Next forecast at approx. 1:05 am.Get WillyWeather+ to remove ads