Water Temperature of Lake Superior in Terrace Bay Township, Ontario

Current Water Temperature

2.5°C

Measurement Time: Monday, June 8, 2026, 11:00 AM EDT

Temperature Locations

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Local Points of Interest

Patterson Island; Pukaskwa National Park

Lake Superior

Station Name: Slate Island
Station Type: Buoy
Data Source: National Data Buoy Center

Elevation Above Sea Level: 179 meters

Nearest Address:
Terrace Bay Township, ON P0T 2W0
Thunder Bay District County

GPS Coordinates: 48.54, -86.95

Nearby Water Temperatures

Lake Superior, Isle Royale, MI (80.6 km)
Lake Superior, Copper Harbor, MI (109.6 km)
Washington Creek, Windigo, MI (176.6 km)
Lake Superior, Calumet, MI (187.6 km)
Pilgrim River, Houghton, MI (201.2 km)
Keweenaw Bay, Jacobsville, MI (205.5 km)
East Branch Salmon Trout River, Powell, MI (206.4 km)
Salmon Trout River, Champion, MI (207.4 km)
Grand Portage River, Grand Portage, MN (212.3 km)
Lake Superior, Marquette, MI (224.1 km)
Falls River, L'Anse, MI (229.8 km)
Miners River, Munising, MI (230.3 km)
Middle Branch Escanaba River, , MI (237.6 km)
Middle Branch Escanaba River, Humboldt, MI (237.8 km)
Sturgeon River, Pelkie, MI (239.1 km)

Weather for Terrace Bay Township, Ontario

Current Weather

12.4°C
Smoky haze
Smoky haze
12.3°C
16.8°C
82%
ENE 5.8 kph
12.1 kph
16.8°C
13°C
0 mm
0%
9.6 km
1018 mbar
0

Five Day Weather Forecast

Sunny
Fri
H: 17°C
L: 11°C
Sunny
Sat
H: 22°C
L: 11°C
Sunny
Sun
H: 15°C
L: 11°C
Fog
Mon
H: 13°C
L: 10°C
Fog
Tue
H: 14°C
L: 9°C

Air Quality

AQI: 2 - Moderate
PM2.5: 39 μg/m3
PM10: 39.3 μg/m3
Carbon Monoxide: 110 μg/m3
Nitrogen Dioxide: 1 μg/m3
Sulphur Dioxide: 0.9 μg/m3
Ozone: 74 μg/m3

Astronomical

Sunrise: 6:04 AM
Sun Transit: 1:54 PM
Sunset: 9:43 PM
Daylight: 15 hrs 39 mins
Moonrise: 10:09 AM
Moon Transit: 4:57 PM
Moonset: 12:11 AM
Moon Phase: Waxing Crescent
Moon Illumination: 7.0%

Best Times for Fishing or Hunting

Major Periods

4:28 AM - 6:58 AM
4:27 PM - 6:57 PM

Minor Periods

9:39 AM - 11:09 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

yellow warning - air quality - in effect

Effective: Thu July 16, 2026, 5:44 AM
Expires: Thu July 16, 2026, 9:44 PM

Smoke from wildfires is causing poor air quality and reduced visibility. ### As smoke levels increase, health risks increase. Limit time outdoors. Consider reducing or rescheduling 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 reduce or reschedule 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, 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.


yellow warning - air quality - in effect

Effective: Thu July 16, 2026, 5:44 AM
Expires: Thu July 16, 2026, 9:44 PM

### As smoke levels increase, health risks increase. Limit time outdoors. Consider reducing or rescheduling 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 reduce or reschedule 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, 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, 5:34 AM
Expires: Thu July 16, 2026, 9:34 PM

Smoke from wildfires in the area 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, 5:34 AM
Expires: Thu July 16, 2026, 9:34 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, 5:00 PM
Expires: Fri July 17, 2026, 9:00 AM

Smoke from wildfires in the area 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.


Friday, July 17, 2026

Weather Forecast

Sunny
16.9°C
11°C
13.9°C
92%
11.63 mm
86%
0%
13.3 kph
1.8


Air Quality

AQI: 2 - Moderate
PM2.5: 24.23 μg/m3
PM10: 24.74 μg/m3
Carbon Monoxide: 120.46 μg/m3
Nitrogen Dioxide: 0.66 μg/m3
Sulphur Dioxide: 0.65 μg/m3
Ozone: 73.79 μg/m3

Astronomical

Sunrise: 6:04 AM
Sun Transit: 1:54 PM
Sunset: 9:43 PM
Daylight: 15 hrs 39 mins
Moonrise: 10:09 AM
Moon Transit: 4:57 PM
Moonset: 12:11 AM
Moon Phase: Waxing Crescent
Moon Illumination: 7.0%

Best Times for Fishing or Hunting

Major Periods

4:28 AM - 6:58 AM
4:27 PM - 6:57 PM

Minor Periods

9:39 AM - 11:09 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Saturday, July 18, 2026

Weather Forecast

Sunny
22.4°C
11.2°C
16.5°C
76%
0.13 mm
21%
0%
19.1 kph
3.3


Air Quality

AQI: 2 - Moderate
PM2.5: 24.95 μg/m3
PM10: 25.24 μg/m3
Carbon Monoxide: 168.17 μg/m3
Nitrogen Dioxide: 0.56 μg/m3
Sulphur Dioxide: 0.64 μg/m3
Ozone: 89.17 μg/m3

Astronomical

Sunrise: 6:05 AM
Sun Transit: 1:54 PM
Sunset: 9:42 PM
Daylight: 15 hrs 37 mins
Moonrise: 11:27 AM
Moon Transit: 5:42 PM
Moonset: 12:28 AM
Moon Phase: Waxing Crescent
Moon Illumination: 13.9%

Best Times for Fishing or Hunting

Major Periods

5:15 AM - 7:45 AM
5:12 PM - 7:42 PM

Minor Periods

10:57 AM - 12:27 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Sunday, July 19, 2026

Weather Forecast

Sunny
15.2°C
10.5°C
12.9°C
80%
0.02 mm
12%
0%
10.8 kph
5.6


Air Quality

AQI: 2 - Moderate
PM2.5: 19.15 μg/m3
PM10: 19.39 μg/m3
Carbon Monoxide: 176.47 μg/m3
Nitrogen Dioxide: 0.6 μg/m3
Sulphur Dioxide: 0.39 μg/m3
Ozone: 65.88 μg/m3

Astronomical

Sunrise: 6:06 AM
Sun Transit: 1:54 PM
Sunset: 9:41 PM
Daylight: 15 hrs 35 mins
Moonrise: 12:42 AM
Moon Transit: 6:26 PM
Moonset: 12:43 AM
Moon Phase: Waxing Crescent
Moon Illumination: 22.6%

Best Times for Fishing or Hunting

Major Periods

5:59 AM - 8:29 AM
5:56 PM - 8:26 PM

Minor Periods

12:12 AM - 1:42 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Monday, July 20, 2026

Weather Forecast

Fog
12.9°C
9.6°C
11.6°C
96%
11.47 mm
92%
0%
19.8 kph
1.6


Air Quality

AQI: 2 - Moderate
PM2.5: 23.53 μg/m3
PM10: 23.88 μg/m3
Carbon Monoxide: 457.88 μg/m3
Nitrogen Dioxide: 1.4 μg/m3
Sulphur Dioxide: 0.65 μg/m3
Ozone: 109.96 μg/m3

Astronomical

Sunrise: 6:08 AM
Sun Transit: 1:54 PM
Sunset: 9:40 PM
Daylight: 15 hrs 33 mins
Moonrise: 1:54 PM
Moon Transit: 7:09 PM
Moonset: 12:58 AM
Moon Phase: Waxing Crescent
Moon Illumination: 32.7%

Best Times for Fishing or Hunting

Major Periods

6:43 AM - 9:13 AM
6:39 PM - 9:09 PM

Minor Periods

1:24 PM - 2:54 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Tuesday, July 21, 2026

Weather Forecast

Fog
13.5°C
8.7°C
11.4°C
86%
0.68 mm
60%
0%
28.4 kph
4


Air Quality

AQI: 2 - Moderate
PM2.5: 18.76 μg/m3
PM10: 19.27 μg/m3
Carbon Monoxide: 417.44 μg/m3
Nitrogen Dioxide: 2.44 μg/m3
Sulphur Dioxide: 0.62 μg/m3
Ozone: 96.44 μg/m3

Astronomical

Sunrise: 6:09 AM
Sun Transit: 1:54 PM
Sunset: 9:39 PM
Daylight: 15 hrs 30 mins
Moonrise: 3:06 PM
Moon Transit: 7:53 PM
Moonset: 12:14 AM
Moon Phase: First Quarter
Moon Illumination: 43.7%

Best Times for Fishing or Hunting

Major Periods

7:26 AM - 9:56 AM
7:23 PM - 9:53 PM

Minor Periods

2:36 PM - 4:06 PM
12:00 AM - 12:00 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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