Water Temperature of the Delaware River in New Castle, DE

Current Water Temperature

82.4°F

Measurement Time: Thursday, July 16, 2026, 5:03 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

90°F
Mist
Mist
94.4°F
88.5°F
49%
NNW 8.1 mph
16.4 mph
86.4°F
64°F
0 in
0%
4 mi
1012 mbar
0

Five Day Weather Forecast

Sunny
Thu
H: 99°F
L: 76°F
Sunny
Fri
H: 89°F
L: 71°F
Patchy rain nearby
Sat
H: 76°F
L: 70°F
Partly Cloudy
Sun
H: 85°F
L: 70°F
Sunny
Mon
H: 83°F
L: 61°F

Air Quality

AQI: 1 - Good
PM2.5: 12.7 μg/m3
PM10: 13 μg/m3
Carbon Monoxide: 175 μg/m3
Nitrogen Dioxide: 9.7 μg/m3
Sulphur Dioxide: 1.9 μg/m3
Ozone: 133 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

Air Quality Alert issued July 15 at 3:45PM EDT by NWS Mount Holly NJ

Effective: Wed July 15, 2026, 3:45 PM
Expires: Fri July 17, 2026, 12:00 AM

The New Jersey Department of Environmental Protection has issued a code red air quality alert Thursday for Salem and Cumberland Counties. A code red air quality alert means that air pollution concentrations within the region are unhealthful for the general population. 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/
Thursday, July 16, 2026

Weather Forecast

Sunny
98.6°F
75.9°F
86.8°F
61%
0 in
3%
0%
10.1 mph
7.2


Air Quality

AQI: 2 - Moderate
PM2.5: 16.72 μg/m3
PM10: 17.13 μg/m3
Carbon Monoxide: 167.58 μg/m3
Nitrogen Dioxide: 10.31 μg/m3
Sulphur Dioxide: 1.8 μg/m3
Ozone: 107.54 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
89.3°F
70.9°F
79.3°F
49%
0 in
2%
0%
6 mph
6.8


Air Quality

AQI: 2 - Moderate
PM2.5: 15.78 μg/m3
PM10: 16.1 μg/m3
Carbon Monoxide: 191.42 μg/m3
Nitrogen Dioxide: 9.2 μg/m3
Sulphur Dioxide: 2.09 μg/m3
Ozone: 104.13 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

Saturday, July 18, 2026

Weather Forecast

Patchy rain nearby
76.1°F
69.5°F
72.9°F
86%
0.89 in
86%
0%
11 mph
3.7


Air Quality

AQI: 1 - Good
PM2.5: 8.94 μg/m3
PM10: 10.07 μg/m3
Carbon Monoxide: 162.13 μg/m3
Nitrogen Dioxide: 5.85 μg/m3
Sulphur Dioxide: 0.92 μg/m3
Ozone: 95.75 μg/m3

Astronomical

Sunrise: 5:49 AM
Sun Transit: 1:08 PM
Sunset: 8:27 PM
Daylight: 14 hrs 38 mins
Moonrise: 10:41 AM
Moon Transit: 4:55 PM
Moonset: 11:00 PM
Moon Phase: Waxing Crescent
Moon Illumination: 13.9%

Best Times for Fishing or Hunting

Major Periods

6:02 AM - 8:32 AM
4:25 PM - 6:55 PM

Minor Periods

10:30 PM - 12:00 PM
10:11 AM - 11:41 AM

Action Rating: 3 out of 5

Sunday, July 19, 2026

Weather Forecast

Partly Cloudy
84.8°F
69.6°F
77.1°F
72%
0.08 in
57%
0%
12.8 mph
7.7


Air Quality

AQI: 1 - Good
PM2.5: 5.45 μg/m3
PM10: 5.52 μg/m3
Carbon Monoxide: 162.05 μg/m3
Nitrogen Dioxide: 4.85 μg/m3
Sulphur Dioxide: 1.12 μg/m3
Ozone: 86.46 μg/m3

Astronomical

Sunrise: 5:50 AM
Sun Transit: 1:08 PM
Sunset: 8:27 PM
Daylight: 14 hrs 37 mins
Moonrise: 11:47 AM
Moon Transit: 5:39 PM
Moonset: 11:22 PM
Moon Phase: Waxing Crescent
Moon Illumination: 22.6%

Best Times for Fishing or Hunting

Major Periods

6:46 AM - 9:16 AM
5:09 PM - 7:39 PM

Minor Periods

12:00 AM - 12:00 AM
11:17 AM - 12:47 AM

Action Rating: 2 out of 5

Monday, July 20, 2026

Weather Forecast

Sunny
83.1°F
61.1°F
72°F
60%
0 in
4%
0%
12.3 mph
9.1


Air Quality

AQI: 1 - Good
PM2.5: 5.23 μg/m3
PM10: 5.27 μg/m3
Carbon Monoxide: 213.78 μg/m3
Nitrogen Dioxide: 9.19 μg/m3
Sulphur Dioxide: 1.06 μg/m3
Ozone: 49.44 μg/m3

Astronomical

Sunrise: 5:51 AM
Sun Transit: 1:08 PM
Sunset: 8:26 PM
Daylight: 14 hrs 35 mins
Moonrise: 12:52 AM
Moon Transit: 6:22 PM
Moonset: 12:22 AM
Moon Phase: Waxing Crescent
Moon Illumination: 32.7%

Best Times for Fishing or Hunting

Major Periods

7:30 AM - 10:00 AM
5:52 PM - 8:22 PM

Minor Periods

12:22 AM - 1:52 PM
12:00 AM - 12:00 AM

Action Rating: 3 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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