Chesapeake Bay - Patapsco River Entrance UV IndexUnited StatesMDBaltimore CountyChesapeake Bay - Patapsco River Entrance1-Day3-Day Graph Plots Open in Graphs UV Forecast NOAAChesapeake Bay - Patapsco River Entrance UV forecast issued yesterday at 3:19 pm. Next forecast at approx. 3:19 pm.Get an account to remove ads