Station Name: Delaware River at Fort Mifflin at Philadelphia, PA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 0 feet

Nearest Address:
Fort Mifflin Road
Philadelphia, PA 19153
Philadelphia County

GPS Coordinates: 39.8792798, -75.20268029

Nearby Water Temperatures

Special Weather Statement issued April 11 at 3:53AM EDT by NWS Mount Holly NJ

Effective: Sat April 11, 2026, 3:53 AM
Expires: Sat April 11, 2026, 8:00 PM

There is an elevated risk for fire spread today across southeastern Pennsylvania. Minimum relative humidity values will drop to around 25 to 35 percent this afternoon. This will be accompanied by northwesterly winds with gusts up to 20-25 MPH. These conditions, along with the continued drying of fine fuels, could support the rapid spread of any fires that ignite, which could quickly become difficult to control. Conditions improve during the evening as the wind diminishes and the relative humidity increases. Outdoor burning is strongly discouraged. Be sure to properly extinguish or dispose of any potential ignition sources, including smoking materials such as cigarette butts. This forecast considers meteorological, fuel, and land conditions and has been developed in coordination with state fire officials.

Frost Advisory issued April 11 at 1:54PM EDT until April 12 at 8:00AM EDT by NWS Mount Holly NJ

Effective: Sat April 11, 2026, 1:54 PM
Expires: Sun April 12, 2026, 8:00 AM

* WHAT...Temperatures as low as 36 will result in frost formation. * WHERE...Berks, Western Chester, and Western Montgomery Counties. * WHEN...From 2 AM to 8 AM EDT Sunday. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

Take steps now to protect tender plants from the cold.