Water Temperature of the St. Marys River in Sault Ste. Marie, MI
Current Water Temperature
Measurement Time: Thursday, July 16, 2026, 9:12 PM EDT
Temperature Locations
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Local Points of Interest
Rotary Park; Rotary Island; Steers Island; Island Number One; Sault Sainte MarieStation Name: Little Rapids
Data Source: NOAA Tides and Currents
Elevation Above Sea Level: 568 feet
Sensor Depth: -8 feet
Nearest Address:
1425 Riverside Dr
Sault Ste. Marie, MI 49783
Chippewa County
GPS Coordinates: 46.485832, -84.301666
Nearby Water Temperatures
St. Marys River, Sault Ste. Marie, MI (3.5 mi)St. Marys River, Barbeau, MI (14.5 mi)
St. Marys River, Barbeau, MI (16.2 mi)
Lake Huron, De Tour Village, MI (39.2 mi)
Lake Huron, Bois Blanc Island, MI (49.9 mi)
Straits of Mackinac, Mackinaw City, MI (50.9 mi)
Seul Choix Bay, Port Inland, MI (83.1 mi)
Little Traverse Bay, Petoskey, MI (83.7 mi)
Lake Huron, Alpena, MI (105.3 mi)
Miners River, Munising, MI (106.5 mi)
Thunder Bay River, Alpena, MI (106.9 mi)
Lake Huron, Alpena, MI (114.8 mi)
North Branch Au Sable River, Grayling, MI (122.4 mi)
Au Sable River, Luzerne, MI (125 mi)
Au Sable River, Mio, MI (126.4 mi)
Weather for Sault Ste. Marie, Michigan
Current Weather

Five Day Weather Forecast

Thu
H: 81°F
L: 57°F

Fri
H: 79°F
L: 57°F

Sat
H: 70°F
L: 58°F

Sun
H: 71°F
L: 49°F

Mon
H: 75°F
L: 56°F
Air Quality
Nitrogen Dioxide: 2.9 μg/m3
Sulphur Dioxide: 0.6 μg/m3
Ozone: 65 μg/m3
Astronomical
Sun Transit: 1:43 PM
Sunset: 9:25 PM
Daylight: 15 hrs 25 mins
Moon Transit: 3:57 PM
Moonset: 10:57 PM
Moon Phase: New
Moon Illumination: 2.4%
Best Times for Fishing or Hunting
Major Periods
3:49 AM - 6:19 AM3:27 PM - 5:57 PM
Minor Periods
10:27 PM - 11:57 PM8:11 AM - 9:41 AM
Action Rating: 4 out of 5
orange warning - air quality - in effect
Effective: Thu July 16, 2026, 5:47 AM
Expires: Thu July 16, 2026, 9:47 PM
Smoke from wildfires in northwestern Ontario is causing very poor air quality and reduced visibility. ### During heavy smoke conditions, everyone’s health is at risk regardless of their age or health status. Limit time outdoors. Reschedule or cancel outdoor sports, activities and events. You may experience mild and common symptoms such as eye, nose and throat irritation, headaches or a mild cough. More serious but less common symptoms include wheezing, chest pains or severe cough. If you think you are having a medical emergency, seek immediate medical assistance. People more likely to be impacted by wildfire smoke, including people aged 65 and older, pregnant people, infants and young children, people with an existing illness or chronic health condition, and people who work outdoors, should avoid strenuous activities outdoors and seek medical attention if experiencing symptoms. For further information visit the website https://www.airqualityontario.com/ or contact the Ontario Ministry of the Environment, Conservation and Parks at 416-314-6666. Visit http://www.airhealth.ca for information on how to reduce your health risk and your personal contribution to pollution levels, as well as for current and forecast AQHI values. Please continue to monitor alerts and forecasts issued by Environment Canada.
When indoors, keep windows and doors closed as much as possible. When there is an extreme heat event occurring with poor air quality, prioritize keeping cool. Protect your indoor air from wildfire smoke. Actions can include using the highest quality air filter that your ventilation system can handle and/or a certified portable air cleaner that can filter fine particles. If you must spend time outdoors, limit the time as much as possible. A well-constructed, well-fitting and properly worn respirator type mask (such as a NIOSH-certified N95 or equivalent respirator) can reduce your exposure to the fine particles in the smoke. Even though exposure may be reduced, there can still be risks to health. Check in on others who are in your care or live nearby who may be more likely to be impacted by wildfire smoke. Always follow guidance from local authorities. Learn more at https://www.canada.ca/wildfire-smoke.
orange warning - air quality - in effect
Effective: Thu July 16, 2026, 5:47 AM
Expires: Thu July 16, 2026, 9:47 PM
### During heavy smoke conditions, everyone’s health is at risk regardless of their age or health status. Limit time outdoors. Reschedule or cancel outdoor sports, activities and events. You may experience mild and common symptoms such as eye, nose and throat irritation, headaches or a mild cough. More serious but less common symptoms include wheezing, chest pains or severe cough. If you think you are having a medical emergency, seek immediate medical assistance. People more likely to be impacted by wildfire smoke, including people aged 65 and older, pregnant people, infants and young children, people with an existing illness or chronic health condition, and people who work outdoors, should avoid strenuous activities outdoors and seek medical attention if experiencing symptoms. For further information visit the website https://www.airqualityontario.com/ or contact the Ontario Ministry of the Environment, Conservation and Parks at 416-314-6666. Visit http://www.airhealth.ca for information on how to reduce your health risk and your personal contribution to pollution levels, as well as for current and forecast AQHI values. Please continue to monitor alerts and forecasts issued by Environment Canada.
When indoors, keep windows and doors closed as much as possible. When there is an extreme heat event occurring with poor air quality, prioritize keeping cool. Protect your indoor air from wildfire smoke. Actions can include using the highest quality air filter that your ventilation system can handle and/or a certified portable air cleaner that can filter fine particles. If you must spend time outdoors, limit the time as much as possible. A well-constructed, well-fitting and properly worn respirator type mask (such as a NIOSH-certified N95 or equivalent respirator) can reduce your exposure to the fine particles in the smoke. Even though exposure may be reduced, there can still be risks to health. Check in on others who are in your care or live nearby who may be more likely to be impacted by wildfire smoke. Always follow guidance from local authorities. Learn more at https://www.canada.ca/wildfire-smoke.
orange warning - air quality - in effect
Effective: Thu July 16, 2026, 4:55 PM
Expires: Fri July 17, 2026, 8:55 AM
Smoke from wildfires in northwestern Ontario is causing very poor air quality and reduced visibility. ### During heavy smoke conditions, everyone’s health is at risk regardless of their age or health status. Limit time outdoors. Reschedule or cancel outdoor sports, activities and events. You may experience mild and common symptoms such as eye, nose and throat irritation, headaches or a mild cough. More serious but less common symptoms include wheezing, chest pains or severe cough. If you think you are having a medical emergency, seek immediate medical assistance. People more likely to be impacted by wildfire smoke, including people aged 65 and older, pregnant people, infants and young children, people with an existing illness or chronic health condition, and people who work outdoors, should avoid strenuous activities outdoors and seek medical attention if experiencing symptoms. For further information visit the website https://www.airqualityontario.com/ or contact the Ontario Ministry of the Environment, Conservation and Parks at 416-314-6666. Visit http://www.airhealth.ca for information on how to reduce your health risk and your personal contribution to pollution levels, as well as for current and forecast AQHI values. Please continue to monitor alerts and forecasts issued by Environment Canada.
When indoors, keep windows and doors closed as much as possible. When there is an extreme heat event occurring with poor air quality, prioritize keeping cool. Protect your indoor air from wildfire smoke. Actions can include using the highest quality air filter that your ventilation system can handle and/or a certified portable air cleaner that can filter fine particles. If you must spend time outdoors, limit the time as much as possible. A well-constructed, well-fitting and properly worn respirator type mask (such as a NIOSH-certified N95 or equivalent respirator) can reduce your exposure to the fine particles in the smoke. Even though exposure may be reduced, there can still be risks to health. Check in on others who are in your care or live nearby who may be more likely to be impacted by wildfire smoke. Always follow guidance from local authorities. Learn more at https://www.canada.ca/wildfire-smoke.
orange warning - air quality - in effect
Effective: Thu July 16, 2026, 4:55 PM
Expires: Fri July 17, 2026, 8:55 AM
### During heavy smoke conditions, everyone’s health is at risk regardless of their age or health status. Limit time outdoors. Reschedule or cancel outdoor sports, activities and events. You may experience mild and common symptoms such as eye, nose and throat irritation, headaches or a mild cough. More serious but less common symptoms include wheezing, chest pains or severe cough. If you think you are having a medical emergency, seek immediate medical assistance. People more likely to be impacted by wildfire smoke, including people aged 65 and older, pregnant people, infants and young children, people with an existing illness or chronic health condition, and people who work outdoors, should avoid strenuous activities outdoors and seek medical attention if experiencing symptoms. For further information visit the website https://www.airqualityontario.com/ or contact the Ontario Ministry of the Environment, Conservation and Parks at 416-314-6666. Visit http://www.airhealth.ca for information on how to reduce your health risk and your personal contribution to pollution levels, as well as for current and forecast AQHI values. Please continue to monitor alerts and forecasts issued by Environment Canada.
When indoors, keep windows and doors closed as much as possible. When there is an extreme heat event occurring with poor air quality, prioritize keeping cool. Protect your indoor air from wildfire smoke. Actions can include using the highest quality air filter that your ventilation system can handle and/or a certified portable air cleaner that can filter fine particles. If you must spend time outdoors, limit the time as much as possible. A well-constructed, well-fitting and properly worn respirator type mask (such as a NIOSH-certified N95 or equivalent respirator) can reduce your exposure to the fine particles in the smoke. Even though exposure may be reduced, there can still be risks to health. Check in on others who are in your care or live nearby who may be more likely to be impacted by wildfire smoke. Always follow guidance from local authorities. Learn more at https://www.canada.ca/wildfire-smoke.
Weather Forecast
Air Quality
Nitrogen Dioxide: 2.53 μg/m3
Sulphur Dioxide: 1.18 μg/m3
Ozone: 86.46 μg/m3
Astronomical
Sun Transit: 1:43 PM
Sunset: 9:25 PM
Daylight: 15 hrs 25 mins
Moon Transit: 3:57 PM
Moonset: 10:57 PM
Moon Phase: New
Moon Illumination: 2.4%
Best Times for Fishing or Hunting
Major Periods
3:49 AM - 6:19 AM3:27 PM - 5:57 PM
Minor Periods
10:27 PM - 11:57 PM8:11 AM - 9:41 AM
Action Rating: 4 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 2.7 μg/m3
Sulphur Dioxide: 0.85 μg/m3
Ozone: 73.63 μg/m3
Astronomical
Sun Transit: 1:43 PM
Sunset: 9:25 PM
Daylight: 15 hrs 23 mins
Moon Transit: 4:46 PM
Moonset: 11:16 PM
Moon Phase: Waxing Crescent
Moon Illumination: 7.0%
Best Times for Fishing or Hunting
Major Periods
4:39 AM - 7:09 AM4:16 PM - 6:46 PM
Minor Periods
12:00 AM - 12:00 AM9:31 AM - 11:01 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 1.75 μg/m3
Sulphur Dioxide: 0.58 μg/m3
Ozone: 92.63 μg/m3
Astronomical
Sun Transit: 1:43 PM
Sunset: 9:24 PM
Daylight: 15 hrs 21 mins
Moon Transit: 5:31 PM
Moonset: 12:16 AM
Moon Phase: Waxing Crescent
Moon Illumination: 13.9%
Best Times for Fishing or Hunting
Major Periods
5:26 AM - 7:56 AM5:01 PM - 7:31 PM
Minor Periods
10:46 AM - 12:16 AM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 2.09 μg/m3
Sulphur Dioxide: 0.69 μg/m3
Ozone: 70.21 μg/m3
Astronomical
Sun Transit: 1:43 PM
Sunset: 9:23 PM
Daylight: 15 hrs 19 mins
Moon Transit: 6:15 PM
Moonset: 12:33 AM
Moon Phase: Waxing Crescent
Moon Illumination: 22.6%
Best Times for Fishing or Hunting
Major Periods
6:10 AM - 8:40 AM5:45 PM - 8:15 PM
Minor Periods
11:59 AM - 1:29 PM12:00 AM - 12:00 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 4.42 μg/m3
Sulphur Dioxide: 0.73 μg/m3
Ozone: 56.67 μg/m3
Astronomical
Sun Transit: 1:43 PM
Sunset: 9:22 PM
Daylight: 15 hrs 17 mins
Moon Transit: 6:58 PM
Moonset: 12:50 AM
Moon Phase: Waxing Crescent
Moon Illumination: 32.7%
Best Times for Fishing or Hunting
Major Periods
6:54 AM - 9:24 AM6:28 PM - 8:58 PM
Minor Periods
1:09 PM - 2:39 PM12:00 AM - 12:00 AM
Action Rating: 3 out of 5
