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 yesterday at 3:17 pm. Next forecast at approx. 3:17 pm.Get WillyWeather+ to remove ads