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 3:19 pm. Next forecast at approx. 3:19 pm.Get an account to remove ads