Water Temperature of the Mississippi River in New Boston, IL

Current Water Temperature

32.0°F

Measurement Time: Tuesday, December 9, 2025, 9:10 AM CST

Temperature Locations

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Local Points of Interest

Wapello, IA; Port Louisa National Wildlife Refuge

Mississippi River

Station Name: New Boston 4NW - L&D 17
Data Source: USGS

Elevation Above Sea Level: 538 feet

Nearest Address:
100 Lock and Dam Rd
New Boston, IL 61272
Mercer County

GPS Coordinates: 41.1925, -91.0578

Nearby Water Temperatures

Mississippi River, Illinois City, IL (16.3 mi)
Mississippi River, Gladstone, IL (21.6 mi)
Mississippi River, Rock Island, IL (34.1 mi)
Mississippi River, Le Claire, IA (43.1 mi)
Mississippi River, Keokuk, IA (57.6 mi)
Mississippi River, Camanche, IA (58.2 mi)
Beaver Slough, Clinton, IA (62.7 mi)
Morgan Creek, Cedar Rapids, IA (65.9 mi)
Mississippi River, Fulton, IL (67.3 mi)
Mississippi River, Fulton, IL (67.5 mi)
North Fork Maquoketa River, Maquoketa, IA (69.3 mi)
Cedar River, Palo, IA (71.3 mi)
Des Moines River, Ottumwa, IA (71.6 mi)
Mississippi River, Canton, MO (76.3 mi)
Mississippi River, Bellevue, IA (80.8 mi)

Weather for New Boston, Illinois

Current Weather

78.8°F
Overcast
Overcast
75°F
85.4°F
91%
SE 7.6 mph
16 mph
78.8°F
76.1°F
0 in
91%
1 mi
1011 mbar
0

Five Day Weather Forecast

Overcast
Sat
H: 89°F
L: 68°F
Sunny
Sun
H: 96°F
L: 72°F
Sunny
Mon
H: 98°F
L: 75°F
Sunny
Tue
H: 92°F
L: 74°F
Sunny
Wed
H: 86°F
L: 66°F

Air Quality

AQI: 1 - Good
PM2.5: 8.5 μg/m3
PM10: 9.6 μg/m3
Carbon Monoxide: 147 μg/m3
Nitrogen Dioxide: 14.4 μg/m3
Sulphur Dioxide: 0.7 μg/m3
Ozone: 62 μg/m3

Astronomical

Sunrise: 5:53 AM
Sun Transit: 1:10 PM
Sunset: 8:28 PM
Daylight: 14 hrs 35 mins
Moonrise: 6:09 PM
Moon Transit: 10:25 PM
Moonset: 1:54 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 85.2%

Best Times for Fishing or Hunting

Major Periods

9:21 AM - 11:51 AM
12:00 AM - 12:00 AM

Minor Periods

5:39 PM - 7:09 PM
1:24 AM - 2:54 AM

Action Rating: 2 out of 5

Heat Advisory issued July 25 at 1:34PM CDT until July 27 at 9:00PM CDT by NWS Lincoln IL

Effective: Sat July 25, 2026, 1:34 PM
Expires: Sun July 26, 2026, 5:00 AM

* WHAT...Heat index 105 to 110 expected. * WHERE...Portions of central, east central, and west central Illinois. * WHEN...From noon Sunday to 9 PM CDT Monday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

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.
Saturday, July 25, 2026

Weather Forecast

Overcast
88.9°F
68°F
77°F
80%
0.01 in
36%
0%
7.6 mph
6.3


Air Quality

AQI: 1 - Good
PM2.5: 6.7 μg/m3
PM10: 7.33 μg/m3
Carbon Monoxide: 142.46 μg/m3
Nitrogen Dioxide: 5.58 μg/m3
Sulphur Dioxide: 1.57 μg/m3
Ozone: 77.25 μg/m3

Astronomical

Sunrise: 5:53 AM
Sun Transit: 1:10 PM
Sunset: 8:28 PM
Daylight: 14 hrs 35 mins
Moonrise: 6:09 PM
Moon Transit: 10:25 PM
Moonset: 1:54 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 85.2%

Best Times for Fishing or Hunting

Major Periods

9:21 AM - 11:51 AM
12:00 AM - 12:00 AM

Minor Periods

5:39 PM - 7:09 PM
1:24 AM - 2:54 AM

Action Rating: 2 out of 5

Sunday, July 26, 2026

Weather Forecast

Sunny
96.1°F
71.6°F
83.4°F
76%
0.6 in
73%
0%
10.3 mph
9.1


Air Quality

AQI: 1 - Good
PM2.5: 6.54 μg/m3
PM10: 7.02 μg/m3
Carbon Monoxide: 145.54 μg/m3
Nitrogen Dioxide: 6.93 μg/m3
Sulphur Dioxide: 0.77 μg/m3
Ozone: 74.42 μg/m3

Astronomical

Sunrise: 5:54 AM
Sun Transit: 1:10 PM
Sunset: 8:27 PM
Daylight: 14 hrs 33 mins
Moonrise: 6:58 PM
Moon Transit: 11:17 PM
Moonset: 2:43 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 92.3%

Best Times for Fishing or Hunting

Major Periods

10:12 AM - 12:42 AM
12:00 AM - 12:00 AM

Minor Periods

6:28 PM - 7:58 PM
2:13 AM - 3:43 AM

Action Rating: 3 out of 5

Monday, July 27, 2026

Weather Forecast

Sunny
97.5°F
74.9°F
85.9°F
63%
0 in
4%
0%
9.8 mph
9.9


Air Quality

AQI: 1 - Good
PM2.5: 6.45 μg/m3
PM10: 7.76 μg/m3
Carbon Monoxide: 118.46 μg/m3
Nitrogen Dioxide: 3.78 μg/m3
Sulphur Dioxide: 0.9 μg/m3
Ozone: 87.13 μg/m3

Astronomical

Sunrise: 5:55 AM
Sun Transit: 1:10 PM
Sunset: 8:26 PM
Daylight: 14 hrs 31 mins
Moonrise: 7:40 PM
Moon Transit: 12:00 AM
Moonset: 3:39 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:03 AM - 1:33 PM

Minor Periods

7:10 PM - 8:40 PM
3:09 AM - 4:39 AM

Action Rating: 3 out of 5

Tuesday, July 28, 2026

Weather Forecast

Sunny
91.8°F
74.3°F
82.7°F
72%
0 in
8%
0%
11.2 mph
7.2


Air Quality

AQI: 1 - Good
PM2.5: 3.48 μg/m3
PM10: 3.63 μg/m3
Carbon Monoxide: 130.83 μg/m3
Nitrogen Dioxide: 3.79 μg/m3
Sulphur Dioxide: 0.58 μg/m3
Ozone: 85.38 μg/m3

Astronomical

Sunrise: 5:56 AM
Sun Transit: 1:10 PM
Sunset: 8:25 PM
Daylight: 14 hrs 29 mins
Moonrise: 8:15 PM
Moon Transit: 12:07 AM
Moonset: 4:41 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:53 AM - 2:23 PM

Minor Periods

7:45 PM - 9:15 PM
4:11 AM - 5:41 AM

Action Rating: 4 out of 5

Wednesday, July 29, 2026

Weather Forecast

Sunny
85.9°F
65.5°F
75.7°F
66%
0 in
17%
0%
11 mph
8.7


Air Quality

AQI: 1 - Good
PM2.5: 2.95 μg/m3
PM10: 3.05 μg/m3
Carbon Monoxide: 150.67 μg/m3
Nitrogen Dioxide: 5.92 μg/m3
Sulphur Dioxide: 0.66 μg/m3
Ozone: 69.63 μg/m3

Astronomical

Sunrise: 5:57 AM
Sun Transit: 1:10 PM
Sunset: 8:24 PM
Daylight: 14 hrs 27 mins
Moonrise: 8:44 PM
Moon Transit: 12:56 AM
Moonset: 5:45 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:26 AM - 2:56 AM
12:41 AM - 3:11 PM

Minor Periods

8:14 PM - 9:44 PM
5:15 AM - 6:45 AM

Action Rating: 4 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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