Water Temperature of the St. Clair River in Algonac, MI

Current Water Temperature

75.0°F

Measurement Time: Friday, July 17, 2026, 7:48 PM EDT

Temperature Locations

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Local Points of Interest

Russell Island; Walpole Island

St. Clair River

Station Name: Algonac
Data Source: NOAA Tides and Currents

Elevation Above Sea Level: 571 feet

Sensor Depth: -6 feet

Nearest Address:
1530 Saint Clair River Dr
Algonac, MI 48001
St. Clair County

GPS Coordinates: 42.621113, -82.526665

Nearby Water Temperatures

Clinton River, Mt. Clemens, MI (19.5 mi)
Clinton River, Sterling Heights, MI (25.4 mi)
Lake Huron, Lakeport, MI (35.8 mi)
Detroit River, Detroit, MI (36.7 mi)
River Rouge, Detroit, MI (40.9 mi)
Lower River Rouge, Dearborn, MI (42.9 mi)
River Raisin, Monroe, MI (68.7 mi)
Lake Erie, Marblehead, OH (75.2 mi)
Lake Huron, Harbor Beach, MI (84.9 mi)
Grand River, Fairport Harbor, OH (87.2 mi)
Lake Erie, Cleveland, OH (87.5 mi)
Shiawassee River, Saginaw, MI (89.2 mi)
Saginaw River, Saginaw, MI (90.8 mi)
Tittabawassee River, Freeland, MI (102 mi)
Lake Huron, Port Austin, MI (115 mi)

Weather for Algonac, Michigan

Current Weather

81.1°F
Overcast
Overcast
83.4°F
88.4°F
63%
SSE 11.2 mph
17.9 mph
84.6°F
68°F
0 in
75%
1 mi
1014 mbar
0

Five Day Weather Forecast

Smoky haze
Fri
H: 89°F
L: 59°F
Sunny
Sat
H: 89°F
L: 68°F
Sunny
Sun
H: 74°F
L: 59°F
Sunny
Mon
H: 79°F
L: 57°F
Partly Cloudy
Tue
H: 84°F
L: 68°F

Air Quality

AQI: 1 - Good
PM2.5: 36.2 μg/m3
PM10: 37.5 μg/m3
Carbon Monoxide: 290 μg/m3
Nitrogen Dioxide: 5.6 μg/m3
Sulphur Dioxide: 5.1 μg/m3
Ozone: 177 μg/m3

Astronomical

Sunrise: 6:08 AM
Sun Transit: 1:36 PM
Sunset: 9:04 PM
Daylight: 14 hrs 57 mins
Moonrise: 9:58 AM
Moon Transit: 4:39 PM
Moonset: 11:07 PM
Moon Phase: Waxing Crescent
Moon Illumination: 7.0%

Best Times for Fishing or Hunting

Major Periods

4:46 AM - 7:16 AM
4:09 PM - 6:39 PM

Minor Periods

12:00 AM - 12:00 AM
9:28 AM - 10:58 AM

Action Rating: 2 out of 5

Dense Smoke Advisory issued July 17 at 9:57AM EDT until July 17 at 10:00PM EDT by NWS Detroit/Pontiac MI

Effective: Fri July 17, 2026, 9:57 AM
Expires: Fri July 17, 2026, 10:00 PM

* WHAT...Dense smoke will reduce visibility to 1 NM or less. * WHERE...Portions of Lake Huron and Lake St Clair. * WHEN...Dense smoke persist today through this evening. * IMPACTS...Low visibility will make navigation difficult.

If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use your radar and compass.
Friday, July 17, 2026

Weather Forecast

Smoky haze
88.7°F
58.6°F
74.2°F
72%
0 in
7%
0%
11.4 mph
1.4


Air Quality

AQI: 2 - Moderate
PM2.5: 38.5 μg/m3
PM10: 39.4 μg/m3
Carbon Monoxide: 319.33 μg/m3
Nitrogen Dioxide: 9.11 μg/m3
Sulphur Dioxide: 3.74 μg/m3
Ozone: 121.38 μg/m3

Astronomical

Sunrise: 6:08 AM
Sun Transit: 1:36 PM
Sunset: 9:04 PM
Daylight: 14 hrs 57 mins
Moonrise: 9:58 AM
Moon Transit: 4:39 PM
Moonset: 11:07 PM
Moon Phase: Waxing Crescent
Moon Illumination: 7.0%

Best Times for Fishing or Hunting

Major Periods

4:46 AM - 7:16 AM
4:09 PM - 6:39 PM

Minor Periods

12:00 AM - 12:00 AM
9:28 AM - 10:58 AM

Action Rating: 2 out of 5

Saturday, July 18, 2026

Weather Forecast

Sunny
89.4°F
67.5°F
76.7°F
79%
0.52 in
73%
0%
21.9 mph
8.7


Air Quality

AQI: 1 - Good
PM2.5: 6.77 μg/m3
PM10: 6.92 μg/m3
Carbon Monoxide: 162.58 μg/m3
Nitrogen Dioxide: 5.16 μg/m3
Sulphur Dioxide: 2.15 μg/m3
Ozone: 104.92 μg/m3

Astronomical

Sunrise: 6:09 AM
Sun Transit: 1:36 PM
Sunset: 9:04 PM
Daylight: 14 hrs 55 mins
Moonrise: 11:09 AM
Moon Transit: 5:24 PM
Moonset: 12:07 AM
Moon Phase: Waxing Crescent
Moon Illumination: 13.9%

Best Times for Fishing or Hunting

Major Periods

5:33 AM - 8:03 AM
4:54 PM - 7:24 PM

Minor Periods

10:39 AM - 12:09 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Sunday, July 19, 2026

Weather Forecast

Sunny
74°F
58.6°F
66.9°F
67%
0 in
6%
0%
12.5 mph
7.8


Air Quality

AQI: 1 - Good
PM2.5: 9.9 μg/m3
PM10: 10.04 μg/m3
Carbon Monoxide: 161.14 μg/m3
Nitrogen Dioxide: 4.48 μg/m3
Sulphur Dioxide: 1.73 μg/m3
Ozone: 88.29 μg/m3

Astronomical

Sunrise: 6:10 AM
Sun Transit: 1:36 PM
Sunset: 9:03 PM
Daylight: 14 hrs 53 mins
Moonrise: 12:18 AM
Moon Transit: 6:08 PM
Moonset: 12:27 AM
Moon Phase: Waxing Crescent
Moon Illumination: 22.6%

Best Times for Fishing or Hunting

Major Periods

6:18 AM - 8:48 AM
5:38 PM - 8:08 PM

Minor Periods

11:48 AM - 1:18 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Monday, July 20, 2026

Weather Forecast

Sunny
78.9°F
57°F
67.7°F
53%
0 in
3%
0%
14.5 mph
7.9


Air Quality

AQI: 1 - Good
PM2.5: 11.77 μg/m3
PM10: 11.86 μg/m3
Carbon Monoxide: 302.25 μg/m3
Nitrogen Dioxide: 10.55 μg/m3
Sulphur Dioxide: 2.83 μg/m3
Ozone: 91.04 μg/m3

Astronomical

Sunrise: 6:10 AM
Sun Transit: 1:36 PM
Sunset: 9:02 PM
Daylight: 14 hrs 52 mins
Moonrise: 1:25 PM
Moon Transit: 6:51 PM
Moonset: 12:47 AM
Moon Phase: Waxing Crescent
Moon Illumination: 32.7%

Best Times for Fishing or Hunting

Major Periods

7:01 AM - 9:31 AM
6:21 PM - 8:51 PM

Minor Periods

12:55 AM - 2:25 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Tuesday, July 21, 2026

Weather Forecast

Partly Cloudy
84°F
67.7°F
75.9°F
69%
0.05 in
57%
0%
14.8 mph
7.4


Air Quality

AQI: 1 - Good
PM2.5: 6.14 μg/m3
PM10: 6.22 μg/m3
Carbon Monoxide: 268 μg/m3
Nitrogen Dioxide: 7.87 μg/m3
Sulphur Dioxide: 2.27 μg/m3
Ozone: 92.78 μg/m3

Astronomical

Sunrise: 6:11 AM
Sun Transit: 1:36 PM
Sunset: 9:01 PM
Daylight: 14 hrs 50 mins
Moonrise: 2:32 PM
Moon Transit: 7:35 PM
Moonset: 12:08 AM
Moon Phase: First Quarter
Moon Illumination: 43.7%

Best Times for Fishing or Hunting

Major Periods

7:45 AM - 10:15 AM
7:05 PM - 9:35 PM

Minor Periods

2:02 PM - 3:32 PM
12:00 AM - 12:00 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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