Water Temperature of the Delaware River in New Castle, DE

Current Water Temperature

81.1°F

Measurement Time: Monday, July 13, 2026, 4:51 PM EDT

Temperature Locations

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Local Points of Interest

Delaware Memorial Bridge; Wilmington, DE; Pennsville Township, NJ

Delaware River

Station Name: DELAWARE RIVER AT DEL MEM BRIDGE AT WILMINGTON DE
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 0 feet

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 mi)
Delaware River, Middletown, DE (13.2 mi)
White Clay Creek, Landenberg, PA (13.8 mi)

Weather for New Castle, Delaware

Current Weather

78.1°F
Clear
Clear
80.8°F
77°F
54%
S 6.5 mph
13.3 mph
73.6°F
61.7°F
0 in
0%
9 mi
1022 mbar
0

Five Day Weather Forecast

Sunny
Mon
H: 89°F
L: 66°F
Sunny
Tue
H: 91°F
L: 68°F
Sunny
Wed
H: 98°F
L: 72°F
Sunny
Thu
H: 97°F
L: 75°F
Sunny
Fri
H: 88°F
L: 70°F

Air Quality

AQI: 1 - Good
PM2.5: 6 μg/m3
PM10: 7.3 μg/m3
Carbon Monoxide: 125 μg/m3
Nitrogen Dioxide: 7.8 μg/m3
Sulphur Dioxide: 0.5 μg/m3
Ozone: 71 μg/m3

Astronomical

Sunrise: 5:45 AM
Sun Transit: 1:07 PM
Sunset: 8:30 PM
Daylight: 14 hrs 45 mins
Moonrise: 4:23 AM
Moon Transit: 12:25 AM
Moonset: 8:21 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

1:23 AM - 3:53 AM
11:55 AM - 2:25 PM

Minor Periods

7:51 PM - 9:21 PM
3:53 AM - 5:23 AM

Action Rating: 4 out of 5

Air Quality Alert issued July 13 at 3:45PM EDT by NWS Mount Holly NJ

Effective: Mon July 13, 2026, 3:45 PM
Expires: Wed July 15, 2026, 12:00 AM

The New Jersey Department of Environmental Protection has issued a code orange air quality alert Tuesday for Southwestern New Jersey. 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/
Monday, July 13, 2026

Weather Forecast

Sunny
89.4°F
66.2°F
77°F
64%
0 in
4%
0%
9.4 mph
8.5


Air Quality

AQI: 1 - Good
PM2.5: 7.52 μg/m3
PM10: 10.45 μg/m3
Carbon Monoxide: 127.83 μg/m3
Nitrogen Dioxide: 7.82 μg/m3
Sulphur Dioxide: 0.61 μg/m3
Ozone: 73.79 μg/m3

Astronomical

Sunrise: 5:45 AM
Sun Transit: 1:07 PM
Sunset: 8:30 PM
Daylight: 14 hrs 45 mins
Moonrise: 4:23 AM
Moon Transit: 12:25 AM
Moonset: 8:21 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

1:23 AM - 3:53 AM
11:55 AM - 2:25 PM

Minor Periods

7:51 PM - 9:21 PM
3:53 AM - 5:23 AM

Action Rating: 4 out of 5

Tuesday, July 14, 2026

Weather Forecast

Sunny
91.1°F
67.6°F
78.9°F
62%
0 in
4%
0%
9.6 mph
9.5


Air Quality

AQI: 1 - Good
PM2.5: 8.46 μg/m3
PM10: 10.58 μg/m3
Carbon Monoxide: 152.79 μg/m3
Nitrogen Dioxide: 6.17 μg/m3
Sulphur Dioxide: 1.08 μg/m3
Ozone: 90.04 μg/m3

Astronomical

Sunrise: 5:46 AM
Sun Transit: 1:08 PM
Sunset: 8:30 PM
Daylight: 14 hrs 44 mins
Moonrise: 5:40 AM
Moon Transit: 1:29 PM
Moonset: 9:06 PM
Moon Phase: New
Moon Illumination: 1.9%

Best Times for Fishing or Hunting

Major Periods

2:30 AM - 5:00 AM
12:59 AM - 3:29 PM

Minor Periods

8:36 PM - 10:06 PM
5:10 AM - 6:40 AM

Action Rating: 4 out of 5

Wednesday, July 15, 2026

Weather Forecast

Sunny
97.7°F
72.2°F
85.1°F
58%
0 in
3%
0%
11.6 mph
9.4


Air Quality

AQI: 1 - Good
PM2.5: 8.25 μg/m3
PM10: 8.83 μg/m3
Carbon Monoxide: 153.58 μg/m3
Nitrogen Dioxide: 5.94 μg/m3
Sulphur Dioxide: 1.88 μg/m3
Ozone: 112.92 μg/m3

Astronomical

Sunrise: 5:47 AM
Sun Transit: 1:08 PM
Sunset: 8:29 PM
Daylight: 14 hrs 42 mins
Moonrise: 7:00 AM
Moon Transit: 2:28 PM
Moonset: 9:42 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

3:30 AM - 6:00 AM
1:58 PM - 4:28 PM

Minor Periods

9:12 PM - 10:42 PM
6:30 AM - 8:00 AM

Action Rating: 4 out of 5

Thursday, July 16, 2026

Weather Forecast

Sunny
97.2°F
75°F
85.8°F
57%
0.01 in
17%
0%
12.5 mph
9.2


Air Quality

AQI: 1 - Good
PM2.5: 6.68 μg/m3
PM10: 6.85 μg/m3
Carbon Monoxide: 159.76 μg/m3
Nitrogen Dioxide: 7.75 μg/m3
Sulphur Dioxide: 1.37 μg/m3
Ozone: 93.63 μg/m3

Astronomical

Sunrise: 5:48 AM
Sun Transit: 1:08 PM
Sunset: 8:29 PM
Daylight: 14 hrs 41 mins
Moonrise: 8:18 AM
Moon Transit: 3:21 PM
Moonset: 10:12 PM
Moon Phase: New
Moon Illumination: 2.4%

Best Times for Fishing or Hunting

Major Periods

4:25 AM - 6:55 AM
2:51 PM - 5:21 PM

Minor Periods

9:42 PM - 11:12 PM
7:48 AM - 9:18 AM

Action Rating: 3 out of 5

Friday, July 17, 2026

Weather Forecast

Sunny
87.8°F
70.2°F
78.8°F
47%
0.01 in
17%
0%
11.6 mph
9


Air Quality

AQI: 1 - Good
PM2.5: 4.59 μg/m3
PM10: 4.61 μg/m3
Carbon Monoxide: 185.78 μg/m3
Nitrogen Dioxide: 7.68 μg/m3
Sulphur Dioxide: 1.79 μg/m3
Ozone: 64.44 μg/m3

Astronomical

Sunrise: 5:48 AM
Sun Transit: 1:08 PM
Sunset: 8:28 PM
Daylight: 14 hrs 40 mins
Moonrise: 9:31 AM
Moon Transit: 4:10 PM
Moonset: 10:37 PM
Moon Phase: Waxing Crescent
Moon Illumination: 7.0%

Best Times for Fishing or Hunting

Major Periods

5:15 AM - 7:45 AM
3:40 PM - 6:10 PM

Minor Periods

10:07 PM - 11:37 PM
9:01 AM - 10:31 AM

Action Rating: 2 out of 5

The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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