Water Temperature of the Mississippi River in Keokuk, IA

Current Water Temperature

86.5°F

Measurement Time: Sunday, July 19, 2026, 11:45 PM CDT

Temperature Locations

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Local Points of Interest

Hamilton, IL; Montebello State Park; Victory Park; Lock and Dam 19

Mississippi River

Station Name: Mississippi River at Keokuk, IA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 505 feet

Nearest Address:
434 N Water St
Keokuk, IA 52632
Lee County

GPS Coordinates: 40.39365535, -91.374318

Nearby Water Temperatures

Mississippi River, Canton, MO (18.8 mi)
Mississippi River, Quincy, IL (34 mi)
Mississippi River, Gladstone, IL (38.4 mi)
Mississippi River, Saverton, MO (52.8 mi)
Illinois River, La Grange, IL (54.3 mi)
Mississippi River, New Boston, IL (57.6 mi)
Illinois River, Florence, IL (66.4 mi)
Des Moines River, Ottumwa, IA (69.1 mi)
Mississippi River, Illinois City, IL (73.8 mi)
Long Branch Lake, Macon, MO (74.5 mi)
Mississippi River, Clarksville, MO (74.7 mi)
Mason Tazewell Drainage Ditch, Topeka, IL (77 mi)
Mississippi River, Rock Island, IL (88.4 mi)
Illinois River, Peoria, IL (93.4 mi)
Mississippi River, Le Claire, IA (96.1 mi)

Weather for Keokuk, Iowa

Current Weather

70°F
Mist
Mist
70°F
75.7°F
94%
SE 6.3 mph
13.2 mph
70.2°F
64.8°F
0 in
50%
6 mi
1014 mbar
0

Five Day Weather Forecast

Sunny
Mon
H: 100°F
L: 69°F
Sunny
Tue
H: 85°F
L: 66°F
Sunny
Wed
H: 76°F
L: 58°F
Partly Cloudy
Thu
H: 74°F
L: 57°F
Overcast
Fri
H: 63°F
L: 60°F

Air Quality

AQI: 1 - Good
PM2.5: 11 μg/m3
PM10: 11.1 μg/m3
Carbon Monoxide: 238 μg/m3
Nitrogen Dioxide: 7.2 μg/m3
Sulphur Dioxide: 1.2 μg/m3
Ozone: 71 μg/m3

Astronomical

Sunrise: 5:52 AM
Sun Transit: 1:11 PM
Sunset: 8:31 PM
Daylight: 14 hrs 39 mins
Moonrise: 12:59 AM
Moon Transit: 6:28 PM
Moonset: 12:25 AM
Moon Phase: Waxing Crescent
Moon Illumination: 32.7%

Best Times for Fishing or Hunting

Major Periods

5:24 AM - 7:54 AM
5:58 PM - 8:28 PM

Minor Periods

12:29 AM - 1:59 PM
12:00 AM - 12:00 AM

Action Rating: 4 out of 5

Heat Advisory issued July 19 at 11:28AM CDT until July 20 at 8:00PM CDT by NWS St Louis MO

Effective: Sun July 19, 2026, 11:28 AM
Expires: Mon July 20, 2026, 2:30 AM

* WHAT...Heat index values up to 105 expected. * WHERE...In Illinois, Adams IL County. In Missouri, Audrain MO, Lincoln MO, Knox MO, Lewis MO, Marion MO, Monroe MO, Pike MO, Ralls MO, and Shelby MO Counties. * WHEN...From noon to 8 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. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.


Heat Advisory issued July 20 at 2:10AM CDT until July 20 at 8:00PM CDT by NWS St Louis MO

Effective: Mon July 20, 2026, 2:10 AM
Expires: Mon July 20, 2026, 5:15 PM

* WHAT...Heat index values up to 108 expected. * WHERE...In Illinois, Adams IL County. In Missouri, Audrain MO, Lincoln MO, Knox MO, Lewis MO, Marion MO, Monroe MO, Pike MO, Ralls MO, and Shelby MO Counties. * WHEN...From noon today to 8 PM CDT this evening. * 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. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.


Monday, July 20, 2026

Weather Forecast

Sunny
99.5°F
68.7°F
82.7°F
70%
0 in
6%
0%
10.7 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 8.28 μg/m3
PM10: 8.83 μg/m3
Carbon Monoxide: 187.71 μg/m3
Nitrogen Dioxide: 4.17 μg/m3
Sulphur Dioxide: 1.23 μg/m3
Ozone: 98.04 μg/m3

Astronomical

Sunrise: 5:52 AM
Sun Transit: 1:11 PM
Sunset: 8:31 PM
Daylight: 14 hrs 39 mins
Moonrise: 12:59 AM
Moon Transit: 6:28 PM
Moonset: 12:25 AM
Moon Phase: Waxing Crescent
Moon Illumination: 32.7%

Best Times for Fishing or Hunting

Major Periods

5:24 AM - 7:54 AM
5:58 PM - 8:28 PM

Minor Periods

12:29 AM - 1:59 PM
12:00 AM - 12:00 AM

Action Rating: 4 out of 5

Tuesday, July 21, 2026

Weather Forecast

Sunny
84.9°F
65.8°F
78.2°F
73%
0.02 in
36%
0%
15.4 mph
9.5


Air Quality

AQI: 1 - Good
PM2.5: 4.34 μg/m3
PM10: 4.68 μg/m3
Carbon Monoxide: 118.63 μg/m3
Nitrogen Dioxide: 3.19 μg/m3
Sulphur Dioxide: 0.57 μg/m3
Ozone: 90.21 μg/m3

Astronomical

Sunrise: 5:53 AM
Sun Transit: 1:11 PM
Sunset: 8:31 PM
Daylight: 14 hrs 37 mins
Moonrise: 2:03 PM
Moon Transit: 7:12 PM
Moonset: 12:48 AM
Moon Phase: First Quarter
Moon Illumination: 43.7%

Best Times for Fishing or Hunting

Major Periods

6:08 AM - 8:38 AM
6:42 PM - 9:12 PM

Minor Periods

1:33 PM - 3:03 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Wednesday, July 22, 2026

Weather Forecast

Sunny
76.2°F
57.6°F
66.6°F
73%
0 in
17%
0%
10.1 mph
9.3


Air Quality

AQI: 1 - Good
PM2.5: 2.91 μg/m3
PM10: 3.03 μg/m3
Carbon Monoxide: 161.46 μg/m3
Nitrogen Dioxide: 2.58 μg/m3
Sulphur Dioxide: 0.47 μg/m3
Ozone: 83.25 μg/m3

Astronomical

Sunrise: 5:54 AM
Sun Transit: 1:12 PM
Sunset: 8:30 PM
Daylight: 14 hrs 36 mins
Moonrise: 3:07 PM
Moon Transit: 7:57 PM
Moonset: 12:14 AM
Moon Phase: First Quarter
Moon Illumination: 55.0%

Best Times for Fishing or Hunting

Major Periods

6:53 AM - 9:23 AM
7:27 PM - 9:57 PM

Minor Periods

2:37 PM - 4:07 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Thursday, July 23, 2026

Weather Forecast

Partly Cloudy
74.4°F
56.8°F
64.3°F
78%
0.03 in
45%
0%
11.4 mph
6.1


Air Quality

AQI: 1 - Good
PM2.5: 7.06 μg/m3
PM10: 7.36 μg/m3
Carbon Monoxide: 140.53 μg/m3
Nitrogen Dioxide: 6.16 μg/m3
Sulphur Dioxide: 0.87 μg/m3
Ozone: 83.83 μg/m3

Astronomical

Sunrise: 5:55 AM
Sun Transit: 1:12 PM
Sunset: 8:29 PM
Daylight: 14 hrs 34 mins
Moonrise: 4:10 PM
Moon Transit: 8:45 PM
Moonset: 12:43 AM
Moon Phase: First Quarter
Moon Illumination: 66.1%

Best Times for Fishing or Hunting

Major Periods

7:40 AM - 10:10 AM
8:15 PM - 10:45 PM

Minor Periods

3:40 PM - 5:10 PM
12:13 AM - 1:43 AM

Action Rating: 3 out of 5

Friday, July 24, 2026

Weather Forecast

Overcast
62.6°F
60.3°F
61.4°F
96%
0.76 in
93%
0%
14.1 mph
4


Air Quality

AQI: 1 - Good
PM2.5: 4.23 μg/m3
PM10: 4.38 μg/m3
Carbon Monoxide: 174.5 μg/m3
Nitrogen Dioxide: 9.9 μg/m3
Sulphur Dioxide: 0.7 μg/m3
Ozone: 53.25 μg/m3

Astronomical

Sunrise: 5:56 AM
Sun Transit: 1:12 PM
Sunset: 8:28 PM
Daylight: 14 hrs 32 mins
Moonrise: 5:11 PM
Moon Transit: 9:35 PM
Moonset: 1:17 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 76.3%

Best Times for Fishing or Hunting

Major Periods

8:30 AM - 11:00 AM
9:05 PM - 11:35 PM

Minor Periods

4:41 PM - 6:11 PM
12:47 AM - 2:17 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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