Water Temperature of the Delaware River in New Castle, DE
Current Water Temperature
Measurement Time: Wednesday, June 25, 2025, 1:21 AM EDT
Temperature Locations
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Local Points of Interest
Delaware Memorial Bridge; Wilmington, DE; Pennsville Township, NJSponsored Content
Station Name: DELAWARE RIVER AT DEL MEM BRIDGE AT WILMINGTON DE
Data Source: Water Data - usgc.gov
Elevation Above Sea Level: 0 feet / 0 meters
Nearest Address:
I-295
New Castle, DE 19720
New Castle County
GPS Coordinates: 39.68927997, -75.521588
Nearby Water Temperatures
Christina River, Wilmington, DE (3.4 mi)Christina River, Newport, DE (4.9 mi)
Brandywine Creek, Wilmington, DE (6.3 mi)
White Clay Creek, Stanton, DE (6.7 mi)
Red Clay Creek, Wooddale, DE (7.9 mi)
White Clay Creek, Newark, DE (8.2 mi)
Pike Creek, Newark, DE (9.3 mi)
Chesapeake & Delaware Canal, Port Penn, DE (9.4 mi)
Delaware River, Marcus Hook, PA (10.3 mi)
Chesapeake and Delaware Canal, Delaware City, DE (10.7 mi)
Christina River, Newark, DE (11.5 mi)
White Clay Creek, Newark, DE (12.1 mi)
Brandywine Creek, Chadds Ford, PA (13.0 mi)
Delaware River, Middletown, DE (13.2 mi)
White Clay Creek, Landenberg, PA (13.8 mi)
Weather for New Castle, Delaware
Current Weather

Humidity: 72%
Feels Like: 84.3°F
Wind: N 4.7 mph
Wind Gusts: 9.9 mph
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 0
Five Day Weather Forecast

Wed
H: 103°F
L: 80°F

Thu
H: 84°F
L: 68°F

Fri
H: 70°F
L: 62°F

Sat
H: 91°F
L: 61°F

Sun
H: 87°F
L: 70°F
Air Quality
Nitrogen Dioxide: 13.88 μg/m3
Sulphur Dioxide: 11.66 μg/m3
Ozone: 97 μg/m3
Astronomical
Sun Transit: 1:04 PM
Sunset: 8:34 PM
Daylight: 14 hrs 59 mins
Moon Transit: 1:23 PM
Moonset: 9:24 PM
Moon Phase: New
Moon Illumination: 1.6%
Best Times for Fishing or Hunting
Major Periods
2:21 AM - 4:51 AM12:53 AM - 3:23 PM
Minor Periods
8:54 PM - 10:24 PM4:47 AM - 6:17 AM
Action Rating: 4 out of 5
Extreme Heat Warning issued June 24 at 2:40PM EDT until June 25 at 8:00PM EDT by NWS Mount Holly NJ
Effective: Tue June 24, 2025, 2:40 PM
Expires: Wed June 25, 2025, 3:45 AM
* WHAT...Dangerously hot conditions with heat index values up to 107. * WHERE...In Delaware, New Castle County. In New Jersey, Camden, Gloucester, and Northwestern Burlington Counties. * WHEN...Until 8 PM EDT Wednesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...The hottest temperatures and heat indices will occur this afternoon. Low temperatures between 75 to 80 degrees and high humidity will not offer much relief from the heat tonight. Heat index values up to 106 can be expected on Wednesday.
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. If you do not have air conditioning in your home or lack shelter, you can call 211 for assistance locating appropriate shelter from the heat.
Extreme Heat Warning issued June 24 at 2:40PM EDT until June 25 at 8:00PM EDT by NWS Mount Holly NJ
Effective: Tue June 24, 2025, 2:40 PM
Expires: Wed June 25, 2025, 3:45 AM
* WHAT...Dangerously hot conditions with heat index values up to 107. * WHERE...In Delaware, New Castle County. In New Jersey, Camden, Gloucester, and Northwestern Burlington Counties. * WHEN...Until 8 PM EDT Wednesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...The hottest temperatures and heat indices will occur this afternoon. Low temperatures between 75 to 80 degrees and high humidity will not offer much relief from the heat tonight. Heat index values up to 106 can be expected on Wednesday.
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. If you do not have air conditioning in your home or lack shelter, you can call 211 for assistance locating appropriate shelter from the heat.
Air Quality Alert issued June 24 at 3:45PM EDT by NWS Mount Holly NJ
Non-Weather Emergency Message. Not sent to IPAWS.
Effective: Tue June 24, 2025, 3:45 PM
Expires: Thu June 26, 2025, 12:00 AM
The New Jersey Department of Environmental Protection has issued a code orange air quality alert Wednesday for Salem and Cumberland Counties. A code orange air quality alert means that air pollution concentrations within the region may become unhealthy for sensitive groups. Sensitive groups include children...people suffering from asthma... heart disease or other lung diseases...and the elderly. The effects of air pollution can be minimized by avoiding strenuous activity or exercise outdoors. For more information on ground-level ozone and fine particles...visit http://www.state.nj.us/dep/
Extreme Heat Warning issued June 24 at 2:40PM EDT until June 25 at 8:00PM EDT by NWS Mount Holly NJ
Effective: Tue June 24, 2025, 2:40 PM
Expires: Wed June 25, 2025, 3:45 AM
* WHAT...Dangerously hot conditions with heat index values up to 108. * WHERE...Atlantic, Cape May, Cumberland, and Salem Counties. * WHEN...Until 8 PM EDT Wednesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...The hottest temperatures and heat indices will occur this afternoon. Low temperatures between 75 to 80 degrees and high humidity will not offer much relief from the heat tonight. Heat index values up to 105 can be expected on Wednesday.
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. If you do not have air conditioning in your home or lack shelter, you can call 211 for assistance locating appropriate shelter from the heat.
Air Quality Alert issued June 24 at 3:45PM EDT by NWS Mount Holly NJ
Non-Weather Emergency Message. Not sent to IPAWS.
Effective: Tue June 24, 2025, 3:45 PM
Expires: Thu June 26, 2025, 12:00 AM
The New Jersey Department of Environmental Protection has issued a code orange air quality alert Wednesday for Salem and Cumberland Counties. A code orange air quality alert means that air pollution concentrations within the region may become unhealthy for sensitive groups. Sensitive groups include children...people suffering from asthma... heart disease or other lung diseases...and the elderly. The effects of air pollution can be minimized by avoiding strenuous activity or exercise outdoors. For more information on ground-level ozone and fine particles...visit http://www.state.nj.us/dep/
Weather Forecast
Average Temperature: 90.2°F
Average Humidity: 65%
Wind: 10.5 mph
UV Index: 2.7
Air Quality
Nitrogen Dioxide: 22.31 μg/m3
Sulphur Dioxide: 8.95 μg/m3
Ozone: 107.52 μg/m3
Astronomical
Sun Transit: 1:04 PM
Sunset: 8:34 PM
Daylight: 14 hrs 59 mins
Moon Transit: 1:23 PM
Moonset: 9:24 PM
Moon Phase: New
Moon Illumination: 1.6%
Best Times for Fishing or Hunting
Major Periods
2:21 AM - 4:51 AM12:53 AM - 3:23 PM
Minor Periods
8:54 PM - 10:24 PM4:47 AM - 6:17 AM
Action Rating: 4 out of 5
Weather Forecast
Average Temperature: 79.9°F
Average Humidity: 79%
Wind: 10.7 mph
UV Index: 2.5
Air Quality
Nitrogen Dioxide: 19.18 μg/m3
Sulphur Dioxide: 10 μg/m3
Ozone: 112.72 μg/m3
Astronomical
Sun Transit: 1:05 PM
Sunset: 8:34 PM
Daylight: 14 hrs 59 mins
Moon Transit: 2:24 PM
Moonset: 10:12 PM
Moon Phase: New
Moon Illumination: 0.1%
Best Times for Fishing or Hunting
Major Periods
3:25 AM - 5:55 AM1:54 PM - 4:24 PM
Minor Periods
9:42 PM - 11:12 PM5:59 AM - 7:29 AM
Action Rating: 5 out of 5
Weather Forecast
Average Temperature: 67.8°F
Average Humidity: 90%
Wind: 8.9 mph
UV Index: 1.4
Air Quality
Nitrogen Dioxide: 11.1 μg/m3
Sulphur Dioxide: 2.8 μg/m3
Ozone: 86.12 μg/m3
Astronomical
Sun Transit: 1:05 PM
Sunset: 8:34 PM
Daylight: 14 hrs 58 mins
Moon Transit: 3:21 PM
Moonset: 10:48 PM
Moon Phase: New
Moon Illumination: 2.0%
Best Times for Fishing or Hunting
Major Periods
4:24 AM - 6:54 AM2:51 PM - 5:21 PM
Minor Periods
10:18 PM - 11:48 PM7:12 AM - 8:42 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 76.2°F
Average Humidity: 81%
Wind: 15.7 mph
UV Index: 2.3
Air Quality
Nitrogen Dioxide: 13.38 μg/m3
Sulphur Dioxide: 2.92 μg/m3
Ozone: 72.15 μg/m3
Astronomical
Sun Transit: 1:05 PM
Sunset: 8:34 PM
Daylight: 14 hrs 58 mins
Moon Transit: 4:12 PM
Moonset: 11:17 PM
Moon Phase: Waxing Crescent
Moon Illumination: 6.5%
Best Times for Fishing or Hunting
Major Periods
5:17 AM - 7:47 AM3:42 PM - 6:12 PM
Minor Periods
12:00 AM - 12:00 AM8:25 AM - 9:55 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 76.4°F
Average Humidity: 80%
Wind: 7.2 mph
UV Index: 0.2
Air Quality
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sun Transit: 1:05 PM
Sunset: 8:34 PM
Daylight: 14 hrs 57 mins
Moon Transit: 4:58 PM
Moonset: 12:17 AM
Moon Phase: Waxing Crescent
Moon Illumination: 13.1%
Best Times for Fishing or Hunting
Major Periods
6:05 AM - 8:35 AM4:28 PM - 6:58 PM
Minor Periods
9:34 AM - 11:04 AM12:00 AM - 12:00 AM
Action Rating: 3 out of 5