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

Current Water Temperature

72.3°F

Measurement Time: Sunday, August 3, 2025, 2:24 AM EDT

Temperature Locations

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Local Points of Interest

Russell Island; Walpole Island

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St. Clair River

Station Name: Algonac
Data Source: NOAA Tides and Currents

Elevation Above Sea Level: 571 feet / 174 meters

Sensor Depth: -6.3 feet / -1.9 meters

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 (102.0 mi)
Lake Huron, Port Austin, MI (115.0 mi)

Weather for Algonac, Michigan

Current Weather

61.5°F
Mist
Conditions: Mist
Humidity: 84%
Feels Like: 61.5°F
Wind: SSW 2.2 mph
Wind Gusts: 3.3 mph
Pressure: 30.21 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 6 mi
UV Index: 0

Five Day Weather Forecast

Sunny
Sun
H: 84°F
L: 61°F
Partly Cloudy
Mon
H: 81°F
L: 60°F
Overcast
Tue
H: 85°F
L: 65°F
Patchy rain nearby
Wed
H: 81°F
L: 61°F
Sunny
Thu
H: 81°F
L: 66°F

Air Quality

PM2.5: 50.32 μg/m3
PM10: 50.69 μg/m3
Carbon Monoxide: 649.35 μg/m3
Nitrogen Dioxide: 38.3 μg/m3
Sulphur Dioxide: 5.92 μg/m3
Ozone: 59 μg/m3

Astronomical

Sunrise: 6:25 AM
Sun Transit: 1:36 PM
Sunset: 8:48 PM
Daylight: 14 hrs 23 mins
Moonrise: 4:49 PM
Moon Transit: 9:06 PM
Moonset: 12:45 AM
Moon Phase: First Quarter
Moon Illumination: 70.0%

Best Times for Fishing or Hunting

Major Periods

9:13 AM - 11:43 AM
8:36 PM - 11:06 PM

Minor Periods

4:19 PM - 5:49 PM
12:15 AM - 1:45 AM

Action Rating: 3 out of 5

Air Quality Alert issued August 2 at 10:20AM EDT by NWS Detroit/Pontiac MI

Non-Weather Emergency Message. Not sent to IPAWS.

Effective: Sat August 2, 2025, 10:20 AM
Expires: Sun August 3, 2025, 12:00 PM

The Michigan Department of Environment, Great Lakes, and Energy (EGLE) has issued an Air Quality Advisory for elevated levels of fine particulates (PM2.5) across the state of Michigan. Pollutants are expected to be in the Unhealthy for Sensitive Groups (USG, Orange AQI) range with some locations reaching the Unhealthy (Red AQI) range. The Air Quality Advisory is in effect for the following Michigan counties... Midland...Bay...Huron...Saginaw...Tuscola...Sanilac...Shiawassee... Genesee...Lapeer...St. Clair...Livingston...Oakland...Macomb... Washtenaw...Wayne...Lenawee and Monroe. Canadian wildfire smoke will re-enter Michigan, statewide, Saturday afternoon and persist throuh at least Sunday. A high pressure system sitting in the Midwest will continue to funnel wildfire smoke into the state and cause little to no dispersion due to stagnant conditions. It is recommended that, when possible, you avoid strenuous outdoor activities, especially those with heart disease and respiratory diseases like asthma. Monitor for symptoms such as wheezing, coughing, chest tightness, dizziness, or burning in nose, throat, and eyes. Reduce or eliminate activities that contribute to air pollution, such as: outdoor burning, use of residential wood burning devices. Tips for households: Keep windows closed overnight to prevent smoke from getting indoors and, if possible, run central air conditioning with MERV-13 or higher rated filters. For up-to-date air quality data for Michigan visit the MiAir site: https://air-egle.hub.arcgis.com/ For further information, please see EPAs Air Now site for up-to-date air quality data: https://www.airnow.gov/ For further health information, please see MDHHS Wildfire Smoke and Your Health site: https://www.michigan.gov/mdhhs/safety-injury-prev/environmental-health/ your-health-and-wildfire-smoke


Air Quality Alert issued August 2 at 3:36AM EDT by NWS Detroit/Pontiac MI

Non-Weather Emergency Message. Not sent to IPAWS.

Effective: Sat August 2, 2025, 3:36 AM
Expires: Sun August 3, 2025, 12:15 AM

The Michigan Department of Environment, Great Lakes, and Energy (EGLE) has issued an Air Quality Advisory for elevated levels of fine particulates (PM2.5) across the state of Michigan. Pollutants are expected to be in the Unhealthy for Sensitive Groups (USG, Orange AQI) range through today with some locations reaching the Unhealthy (Red AQI) range. The Air Quality Advisory is in effect for the following Michigan counties... Midland...Bay...Huron...Saginaw...Tuscola...Sanilac...Shiawassee... Genesee...Lapeer...St. Clair...Livingston...Oakland...Macomb... Washtenaw...Wayne...Lenawee and Monroe. Smoke from Canadian wildfires remains over the state, with PM2.5 concentrations ranging from USG to Unhealthy. High pressure settling overhead will limit dispersion and keep smoke at the surface through today. This sustains the threat of increased PM2.5 and readings in the USG range, with some locations reaching as high as the Unhealthy range. It is recommended that, when possible, you avoid strenuous outdoor activities, especially those with heart disease and respiratory diseases like asthma. Monitor for symptoms such as wheezing, coughing, chest tightness, dizziness, or burning in nose, throat, and eyes. Reduce or eliminate activities that contribute to air pollution, such as: outdoor burning, use of residential wood burning devices. Tips for households: Keep windows closed overnight to prevent smoke from getting indoors and, if possible, run central air conditioning with MERV-13 or higher rated filters. For up-to-date air quality data for Michigan visit the MiAir site: https://air-egle.hub.arcgis.com/ For further information, please see EPAs Air Now site for up-to-date air quality data: https://www.airnow.gov/ For further health information, please see MDHHS Wildfire Smoke and Your Health site: https://www.michigan.gov/mdhhs/safety-injury-prev/environmental-health/ your-health-and-wildfire-smoke


Air Quality Alert issued August 2 at 10:20AM EDT by NWS Detroit/Pontiac MI

Non-Weather Emergency Message. Not sent to IPAWS.

Effective: Sat August 2, 2025, 10:20 AM
Expires: Sun August 3, 2025, 12:00 PM

The Michigan Department of Environment, Great Lakes, and Energy (EGLE) has issued an Air Quality Advisory for elevated levels of fine particulates (PM2.5) across the state of Michigan. Pollutants are expected to be in the Unhealthy for Sensitive Groups (USG, Orange AQI) range with some locations reaching the Unhealthy (Red AQI) range. The Air Quality Advisory is in effect for the following Michigan counties... Midland...Bay...Huron...Saginaw...Tuscola...Sanilac...Shiawassee... Genesee...Lapeer...St. Clair...Livingston...Oakland...Macomb... Washtenaw...Wayne...Lenawee and Monroe. Canadian wildfire smoke will re-enter Michigan, statewide, Saturday afternoon and persist throuh at least Sunday. A high pressure system sitting in the Midwest will continue to funnel wildfire smoke into the state and cause little to no dispersion due to stagnant conditions. It is recommended that, when possible, you avoid strenuous outdoor activities, especially those with heart disease and respiratory diseases like asthma. Monitor for symptoms such as wheezing, coughing, chest tightness, dizziness, or burning in nose, throat, and eyes. Reduce or eliminate activities that contribute to air pollution, such as: outdoor burning, use of residential wood burning devices. Tips for households: Keep windows closed overnight to prevent smoke from getting indoors and, if possible, run central air conditioning with MERV-13 or higher rated filters. For up-to-date air quality data for Michigan visit the MiAir site: https://air-egle.hub.arcgis.com/ For further information, please see EPAs Air Now site for up-to-date air quality data: https://www.airnow.gov/ For further health information, please see MDHHS Wildfire Smoke and Your Health site: https://www.michigan.gov/mdhhs/safety-injury-prev/environmental-health/ your-health-and-wildfire-smoke


Air Quality Alert issued August 2 at 10:20AM EDT by NWS Detroit/Pontiac MI

Non-Weather Emergency Message. Not sent to IPAWS.

Effective: Sat August 2, 2025, 10:20 AM
Expires: Sun August 3, 2025, 12:00 PM

The Michigan Department of Environment, Great Lakes, and Energy (EGLE) has issued an Air Quality Advisory for elevated levels of fine particulates (PM2.5) across the state of Michigan. Pollutants are expected to be in the Unhealthy for Sensitive Groups (USG, Orange AQI) range with some locations reaching the Unhealthy (Red AQI) range. The Air Quality Advisory is in effect for the following Michigan counties... Midland...Bay...Huron...Saginaw...Tuscola...Sanilac...Shiawassee... Genesee...Lapeer...St. Clair...Livingston...Oakland...Macomb... Washtenaw...Wayne...Lenawee and Monroe. Canadian wildfire smoke will re-enter Michigan, statewide, Saturday afternoon and persist throuh at least Sunday. A high pressure system sitting in the Midwest will continue to funnel wildfire smoke into the state and cause little to no dispersion due to stagnant conditions. It is recommended that, when possible, you avoid strenuous outdoor activities, especially those with heart disease and respiratory diseases like asthma. Monitor for symptoms such as wheezing, coughing, chest tightness, dizziness, or burning in nose, throat, and eyes. Reduce or eliminate activities that contribute to air pollution, such as: outdoor burning, use of residential wood burning devices. Tips for households: Keep windows closed overnight to prevent smoke from getting indoors and, if possible, run central air conditioning with MERV-13 or higher rated filters. For up-to-date air quality data for Michigan visit the MiAir site: https://air-egle.hub.arcgis.com/ For further information, please see EPAs Air Now site for up-to-date air quality data: https://www.airnow.gov/ For further health information, please see MDHHS Wildfire Smoke and Your Health site: https://www.michigan.gov/mdhhs/safety-injury-prev/environmental-health/ your-health-and-wildfire-smoke


Air Quality Alert issued August 2 at 3:36AM EDT by NWS Detroit/Pontiac MI

Non-Weather Emergency Message. Not sent to IPAWS.

Effective: Sat August 2, 2025, 3:36 AM
Expires: Sun August 3, 2025, 12:15 AM

The Michigan Department of Environment, Great Lakes, and Energy (EGLE) has issued an Air Quality Advisory for elevated levels of fine particulates (PM2.5) across the state of Michigan. Pollutants are expected to be in the Unhealthy for Sensitive Groups (USG, Orange AQI) range through today with some locations reaching the Unhealthy (Red AQI) range. The Air Quality Advisory is in effect for the following Michigan counties... Midland...Bay...Huron...Saginaw...Tuscola...Sanilac...Shiawassee... Genesee...Lapeer...St. Clair...Livingston...Oakland...Macomb... Washtenaw...Wayne...Lenawee and Monroe. Smoke from Canadian wildfires remains over the state, with PM2.5 concentrations ranging from USG to Unhealthy. High pressure settling overhead will limit dispersion and keep smoke at the surface through today. This sustains the threat of increased PM2.5 and readings in the USG range, with some locations reaching as high as the Unhealthy range. It is recommended that, when possible, you avoid strenuous outdoor activities, especially those with heart disease and respiratory diseases like asthma. Monitor for symptoms such as wheezing, coughing, chest tightness, dizziness, or burning in nose, throat, and eyes. Reduce or eliminate activities that contribute to air pollution, such as: outdoor burning, use of residential wood burning devices. Tips for households: Keep windows closed overnight to prevent smoke from getting indoors and, if possible, run central air conditioning with MERV-13 or higher rated filters. For up-to-date air quality data for Michigan visit the MiAir site: https://air-egle.hub.arcgis.com/ For further information, please see EPAs Air Now site for up-to-date air quality data: https://www.airnow.gov/ For further health information, please see MDHHS Wildfire Smoke and Your Health site: https://www.michigan.gov/mdhhs/safety-injury-prev/environmental-health/ your-health-and-wildfire-smoke


Sunday, August 3, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 72.3°F
Average Humidity: 66%
Chance of Rain: 0%
Wind: 3.8 mph
UV Index: 1.8

Air Quality

AQI: 3 - Unhealthy for Sensitive Groups
PM2.5: 49.48 μg/m3
PM10: 50.14 μg/m3
Carbon Monoxide: 517.33 μg/m3
Nitrogen Dioxide: 28.76 μg/m3
Sulphur Dioxide: 4.1 μg/m3
Ozone: 90.24 μg/m3

Astronomical

Sunrise: 6:25 AM
Sun Transit: 1:36 PM
Sunset: 8:48 PM
Daylight: 14 hrs 23 mins
Moonrise: 4:49 PM
Moon Transit: 9:06 PM
Moonset: 12:45 AM
Moon Phase: First Quarter
Moon Illumination: 70.0%

Best Times for Fishing or Hunting

Major Periods

9:13 AM - 11:43 AM
8:36 PM - 11:06 PM

Minor Periods

4:19 PM - 5:49 PM
12:15 AM - 1:45 AM

Action Rating: 3 out of 5

Monday, August 4, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 71.6°F
Average Humidity: 76%
Chance of Rain: 0%
Wind: 7.4 mph
UV Index: 1.8

Air Quality

AQI: 3 - Unhealthy for Sensitive Groups
PM2.5: 43.6 μg/m3
PM10: 44.16 μg/m3
Carbon Monoxide: 503.13 μg/m3
Nitrogen Dioxide: 29.11 μg/m3
Sulphur Dioxide: 4.9 μg/m3
Ozone: 93.88 μg/m3

Astronomical

Sunrise: 6:26 AM
Sun Transit: 1:36 PM
Sunset: 8:46 PM
Daylight: 14 hrs 21 mins
Moonrise: 5:50 PM
Moon Transit: 10:00 PM
Moonset: 1:21 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 79.8%

Best Times for Fishing or Hunting

Major Periods

10:04 AM - 12:34 AM
12:00 AM - 12:00 AM

Minor Periods

5:20 PM - 6:50 PM
12:51 AM - 2:21 AM

Action Rating: 2 out of 5

Tuesday, August 5, 2025

Weather Forecast

Conditions: Overcast
Average Temperature: 73°F
Average Humidity: 74%
Chance of Rain: 0%
Wind: 11.2 mph
UV Index: 0.1

Air Quality

AQI: 2 - Moderate
PM2.5: 33 μg/m3
PM10: 33.33 μg/m3
Carbon Monoxide: 501.2 μg/m3
Nitrogen Dioxide: 18.35 μg/m3
Sulphur Dioxide: 5.89 μg/m3
Ozone: 105.96 μg/m3

Astronomical

Sunrise: 6:27 AM
Sun Transit: 1:36 PM
Sunset: 8:45 PM
Daylight: 14 hrs 18 mins
Moonrise: 6:45 PM
Moon Transit: 10:53 PM
Moonset: 2:08 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 88.0%

Best Times for Fishing or Hunting

Major Periods

10:58 AM - 1:28 PM
12:00 AM - 12:00 AM

Minor Periods

6:15 PM - 7:45 PM
1:38 AM - 3:08 AM

Action Rating: 2 out of 5

Wednesday, August 6, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 72.3°F
Average Humidity: 70%
Chance of Rain: 85%
Wind: 11.6 mph
UV Index: 5

Air Quality

AQI: 2 - Moderate
PM2.5: 25.67 μg/m3
PM10: 25.84 μg/m3
Carbon Monoxide: 614.77 μg/m3
Nitrogen Dioxide: 15.9 μg/m3
Sulphur Dioxide: 4.11 μg/m3
Ozone: 87.31 μg/m3

Astronomical

Sunrise: 6:28 AM
Sun Transit: 1:35 PM
Sunset: 8:44 PM
Daylight: 14 hrs 16 mins
Moonrise: 7:32 PM
Moon Transit: 11:48 PM
Moonset: 3:04 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 94.4%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

7:02 PM - 8:32 PM
2:34 AM - 4:04 AM

Action Rating: 3 out of 5

Thursday, August 7, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 72.1°F
Average Humidity: 69%
Chance of Rain: 0%
Wind: 10.3 mph
UV Index: 6

Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:29 AM
Sun Transit: 1:35 PM
Sunset: 8:43 PM
Daylight: 14 hrs 14 mins
Moonrise: 8:11 PM
Moon Transit: 12:00 AM
Moonset: 4:09 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 98.4%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:47 AM - 3:17 PM

Minor Periods

7:41 PM - 9:11 PM
3:39 AM - 5:09 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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