Water Temperature of the Au Sable River in South Branch, MI
Current Water Temperature
Measurement Time: Saturday, August 2, 2025, 8:45 PM EDT
Temperature Locations
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Local Points of Interest
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Station Name: AU SABLE RIVER NEAR SOUTH BRANCH, MI
Data Source: Water Data - usgc.gov
Elevation Above Sea Level: 722 feet / 220 meters
Nearest Address:
4980 Loud Dam Rd
South Branch, MI 48737
Iosco County
GPS Coordinates: 44.46334886, -83.7213714
Nearby Water Temperatures
Au Sable River, Glennie, MI (2.4 mi)Au Sable River, Oscoda, MI (7.4 mi)
Au Sable River, Glennie, MI (7.8 mi)
Au Sable River, Curran, MI (11.8 mi)
Au Sable River, Oscoda, MI (14.3 mi)
Au Sable River, Mio, MI (24.3 mi)
Rifle River, Sterling, MI (30.8 mi)
Au Sable River, Luzerne, MI (31.7 mi)
South Branch Au Sable River, Grayling, MI (37.6 mi)
North Branch Au Sable River, Grayling, MI (38.6 mi)
Lake Huron, Alpena, MI (42.5 mi)
Thunder Bay River, Alpena, MI (43.8 mi)
Manistee River, Grayling, MI (57.6 mi)
Lake Huron, Port Austin, MI (65.7 mi)
Tittabawassee River, Freeland, MI (67.9 mi)
Weather for South Branch, Michigan
Current Weather

Humidity: 88%
Feels Like: 61.3°F
Wind: NNW 4.3 mph
Wind Gusts: 8.9 mph
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 6 mi
UV Index: 0
Five Day Weather Forecast

Sun
H: 85°F
L: 60°F

Mon
H: 82°F
L: 62°F

Tue
H: 81°F
L: 61°F

Wed
H: 85°F
L: 59°F

Thu
H: 86°F
L: 63°F
Air Quality
Nitrogen Dioxide: 10.73 μg/m3
Sulphur Dioxide: 0.74 μg/m3
Ozone: 66 μg/m3
Astronomical
Sun Transit: 1:41 PM
Sunset: 8:57 PM
Daylight: 14 hrs 32 mins
Moon Transit: 9:11 PM
Moonset: 12:42 AM
Moon Phase: First Quarter
Moon Illumination: 70.0%
Best Times for Fishing or Hunting
Major Periods
9:08 AM - 11:38 AM8:41 PM - 11:11 PM
Minor Periods
4:32 PM - 6:02 PM12:12 AM - 1:42 AM
Action Rating: 3 out of 5
Air Quality Alert issued August 2 at 11:35AM EDT by NWS Gaylord MI
Non-Weather Emergency Message. Not sent to IPAWS.
Effective: Sat August 2, 2025, 11:35 AM
Expires: Sun August 3, 2025, 11:45 PM
The Michigan Department of Environmental Quality has issued an Air Quality Advisory from Saturday August 2 through Sunday August 3. The advisory is for elevated levels of fine particulates (PM2.5). Pollutants are expected to be in the Unhealthy for Sensitive Groups range...with some areas reaching the Unhealthy range. The alert is in effect for the following Michigan Counties, Chippewa, Mackinac, Emmet, Cheboygan, Presque Isle, Charlevoix, Leelanau, Antrim, Otsego, Montmorency, Alpena, Benzie, Grand Traverse, Kalkaska, Crawford, Oscoda, Alcona, Manistee, Wexford, Missaukee, Roscommon, Ogemaw, Iosco, Gladwin, and Arenac. Canadian wildfire smoke has overspread northern Michigan and is expected to persist through at least Sunday. High pressure over the Midwest will continue to funnel wildfire smoke into the state with little to no dispersion expected due to stagnant conditions. It is recommended that, when possible, you avoid strenuous outdoor activities, especially those with heart disease and respiratory diseases such as 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, and use of residential wood burning devices. 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 further information, please see EPA's Air Now site for up-to- date air quality data at https://www.airnow.gov For further health information, please see MDHHS' Wildfire Smoke and Your Health site at https://www.michigan.gov/mdhhs/safety-injury- prev/environmental-health/your-health-and-wildfire-smoke.
Air Quality Alert issued August 2 at 3:50PM EDT by NWS Gaylord MI
Non-Weather Emergency Message. Not sent to IPAWS.
Effective: Sat August 2, 2025, 3:50 PM
Expires: Sun August 3, 2025, 11:45 PM
An Air Quality Advisory from the Michigan Department of Environmental Quality remains in effect through Sunday August 3, for elevated levels of fine particulates (PM2.5). Pollutants are expected to be in the Unhealthy for Sensitive Groups range.....with some areas reaching the Unhealthy range. The advisory is in effect for the following Michigan counties: Chippewa, Mackinac, Emmet, Cheboygan, Presque Isle, Charlevoix, Leelanau, Antrim, Otsego, Montmorency, Alpena, Benzie, Grand Traverse, Kalkaska, Crawford, Oscoda, Alcona, Manistee, Wexford, Missaukee, Roscommon, Ogemaw, Iosco, Gladwin, and Arenac. Canadian wildfire smoke has overspread northern Michigan and is expected to persist through at least Sunday. High pressure over the Midwest will continue to funnel wildfire smoke into the state with little to no dispersion expected due to stagnant conditions. It is recommended that, when possible, you avoid strenuous outdoor activities, especially those with heart disease and respiratory diseases such as 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, and use of residential wood burning devices. 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 further information, please see EPA's Air Now site for up-to- date air quality data at https://www.airnow.gov For further health information, please see MDHHS' Wildfire Smoke and Your Health site at https://www.michigan.gov/mdhhs/safety-injury- prev/environmental-health/your-health-and-wildfire-smoke.
Air Quality Alert issued August 2 at 11:35AM EDT by NWS Gaylord MI
Non-Weather Emergency Message. Not sent to IPAWS.
Effective: Sat August 2, 2025, 11:35 AM
Expires: Sun August 3, 2025, 11:45 PM
The Michigan Department of Environmental Quality has issued an Air Quality Advisory from Saturday August 2 through Sunday August 3. The advisory is for elevated levels of fine particulates (PM2.5). Pollutants are expected to be in the Unhealthy for Sensitive Groups range...with some areas reaching the Unhealthy range. The alert is in effect for the following Michigan Counties, Chippewa, Mackinac, Emmet, Cheboygan, Presque Isle, Charlevoix, Leelanau, Antrim, Otsego, Montmorency, Alpena, Benzie, Grand Traverse, Kalkaska, Crawford, Oscoda, Alcona, Manistee, Wexford, Missaukee, Roscommon, Ogemaw, Iosco, Gladwin, and Arenac. Canadian wildfire smoke has overspread northern Michigan and is expected to persist through at least Sunday. High pressure over the Midwest will continue to funnel wildfire smoke into the state with little to no dispersion expected due to stagnant conditions. It is recommended that, when possible, you avoid strenuous outdoor activities, especially those with heart disease and respiratory diseases such as 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, and use of residential wood burning devices. 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 further information, please see EPA's Air Now site for up-to- date air quality data at https://www.airnow.gov For further health information, please see MDHHS' Wildfire Smoke and Your Health site at https://www.michigan.gov/mdhhs/safety-injury- prev/environmental-health/your-health-and-wildfire-smoke.
Air Quality Alert issued August 2 at 3:50PM EDT by NWS Gaylord MI
Non-Weather Emergency Message. Not sent to IPAWS.
Effective: Sat August 2, 2025, 3:50 PM
Expires: Sun August 3, 2025, 11:45 PM
An Air Quality Advisory from the Michigan Department of Environmental Quality remains in effect through Sunday August 3, for elevated levels of fine particulates (PM2.5). Pollutants are expected to be in the Unhealthy for Sensitive Groups range.....with some areas reaching the Unhealthy range. The advisory is in effect for the following Michigan counties: Chippewa, Mackinac, Emmet, Cheboygan, Presque Isle, Charlevoix, Leelanau, Antrim, Otsego, Montmorency, Alpena, Benzie, Grand Traverse, Kalkaska, Crawford, Oscoda, Alcona, Manistee, Wexford, Missaukee, Roscommon, Ogemaw, Iosco, Gladwin, and Arenac. Canadian wildfire smoke has overspread northern Michigan and is expected to persist through at least Sunday. High pressure over the Midwest will continue to funnel wildfire smoke into the state with little to no dispersion expected due to stagnant conditions. It is recommended that, when possible, you avoid strenuous outdoor activities, especially those with heart disease and respiratory diseases such as 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, and use of residential wood burning devices. 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 further information, please see EPA's Air Now site for up-to- date air quality data at https://www.airnow.gov For further health information, please see MDHHS' Wildfire Smoke and Your Health site at https://www.michigan.gov/mdhhs/safety-injury- prev/environmental-health/your-health-and-wildfire-smoke.
Air Quality Alert issued August 2 at 11:35AM EDT by NWS Gaylord MI
Non-Weather Emergency Message. Not sent to IPAWS.
Effective: Sat August 2, 2025, 11:35 AM
Expires: Sun August 3, 2025, 11:45 PM
The Michigan Department of Environmental Quality has issued an Air Quality Advisory from Saturday August 2 through Sunday August 3. The advisory is for elevated levels of fine particulates (PM2.5). Pollutants are expected to be in the Unhealthy for Sensitive Groups range...with some areas reaching the Unhealthy range. The alert is in effect for the following Michigan Counties, Chippewa, Mackinac, Emmet, Cheboygan, Presque Isle, Charlevoix, Leelanau, Antrim, Otsego, Montmorency, Alpena, Benzie, Grand Traverse, Kalkaska, Crawford, Oscoda, Alcona, Manistee, Wexford, Missaukee, Roscommon, Ogemaw, Iosco, Gladwin, and Arenac. Canadian wildfire smoke has overspread northern Michigan and is expected to persist through at least Sunday. High pressure over the Midwest will continue to funnel wildfire smoke into the state with little to no dispersion expected due to stagnant conditions. It is recommended that, when possible, you avoid strenuous outdoor activities, especially those with heart disease and respiratory diseases such as 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, and use of residential wood burning devices. 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 further information, please see EPA's Air Now site for up-to- date air quality data at https://www.airnow.gov For further health information, please see MDHHS' Wildfire Smoke and Your Health site at https://www.michigan.gov/mdhhs/safety-injury- prev/environmental-health/your-health-and-wildfire-smoke.
Weather Forecast
Average Temperature: 73.5°F
Average Humidity: 59%
Wind: 6.5 mph
UV Index: 1.6
Air Quality
Nitrogen Dioxide: 7.57 μg/m3
Sulphur Dioxide: 0.68 μg/m3
Ozone: 88.2 μg/m3
Astronomical
Sun Transit: 1:41 PM
Sunset: 8:57 PM
Daylight: 14 hrs 32 mins
Moon Transit: 9:11 PM
Moonset: 12:42 AM
Moon Phase: First Quarter
Moon Illumination: 70.0%
Best Times for Fishing or Hunting
Major Periods
9:08 AM - 11:38 AM8:41 PM - 11:11 PM
Minor Periods
4:32 PM - 6:02 PM12:12 AM - 1:42 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 72.7°F
Average Humidity: 63%
Wind: 9.6 mph
UV Index: 1.7
Air Quality
Nitrogen Dioxide: 8.58 μg/m3
Sulphur Dioxide: 1.22 μg/m3
Ozone: 92.56 μg/m3
Astronomical
Sun Transit: 1:40 PM
Sunset: 8:56 PM
Daylight: 14 hrs 30 mins
Moon Transit: 10:04 PM
Moonset: 1:17 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 79.8%
Best Times for Fishing or Hunting
Major Periods
9:59 AM - 12:29 AM12:00 AM - 12:00 AM
Minor Periods
5:34 PM - 7:04 PM12:47 AM - 2:17 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 68.7°F
Average Humidity: 74%
Wind: 10.7 mph
UV Index: 0.1
Air Quality
Nitrogen Dioxide: 3.69 μg/m3
Sulphur Dioxide: 2.46 μg/m3
Ozone: 119.88 μg/m3
Astronomical
Sun Transit: 1:40 PM
Sunset: 8:54 PM
Daylight: 14 hrs 28 mins
Moon Transit: 10:58 PM
Moonset: 2:03 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 88.0%
Best Times for Fishing or Hunting
Major Periods
10:53 AM - 1:23 PM12:00 AM - 12:00 AM
Minor Periods
6:29 PM - 7:59 PM1:33 AM - 3:03 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 72.2°F
Average Humidity: 63%
Wind: 12.1 mph
UV Index: 5
Air Quality
Nitrogen Dioxide: 5.56 μg/m3
Sulphur Dioxide: 3.79 μg/m3
Ozone: 114.69 μg/m3
Astronomical
Sun Transit: 1:40 PM
Sunset: 8:53 PM
Daylight: 14 hrs 25 mins
Moon Transit: 11:53 PM
Moonset: 3:00 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 94.4%
Best Times for Fishing or Hunting
Major Periods
11:48 AM - 2:18 PM12:00 AM - 12:00 AM
Minor Periods
7:15 PM - 8:45 PM2:30 AM - 4:00 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 70.4°F
Average Humidity: 81%
Wind: 10.5 mph
UV Index: 5
Air Quality
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sun Transit: 1:40 PM
Sunset: 8:52 PM
Daylight: 14 hrs 23 mins
Moon Transit: 12:00 AM
Moonset: 4:06 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 98.4%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM12:42 AM - 3:12 PM
Minor Periods
7:53 PM - 9:23 PM3:36 AM - 5:06 AM
Action Rating: 2 out of 5