Water Temperature of the South Branch Au Sable River in Grayling, MI

Current Water Temperature

72.5°F

Measurement Time: Friday, July 25, 2025, 10:30 AM EDT

Temperature Locations

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Local Points of Interest

Au Sable State Forest-Grayling Unit; Luzerne, MI

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South Branch Au Sable River

Station Name: SOUTH BRANCH AU SABLE RIVER NEAR LUZERNE, MI
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 1,070 feet / 326 meters

Nearest Address:
7801 Old M-72
Grayling, MI 49738
Crawford County

GPS Coordinates: 44.61473849, -84.455575

Nearby Water Temperatures

North Branch Au Sable River, Grayling, MI (7.3 mi)
Au Sable River, Luzerne, MI (9.1 mi)
Au Sable River, Mio, MI (16.3 mi)
Manistee River, Grayling, MI (20.0 mi)
Au Sable River, Curran, MI (30.4 mi)
Au Sable River, Glennie, MI (32.3 mi)
Au Sable River, South Branch, MI (37.6 mi)
Au Sable River, Glennie, MI (40.0 mi)
Rifle River, Sterling, MI (43.2 mi)
Au Sable River, Oscoda, MI (44.6 mi)
Au Sable River, Oscoda, MI (51.8 mi)
Thunder Bay River, Alpena, MI (59.1 mi)
Manistee River, Mesick, MI (62.5 mi)
Little Traverse Bay, Petoskey, MI (62.7 mi)
Lake Huron, Alpena, MI (63.6 mi)

Weather for Grayling, Michigan

Current Weather

82.2°F
Sunny
Conditions: Sunny
Humidity: 42%
Feels Like: 82.8°F
Wind: N 4.7 mph
Wind Gusts: 5.4 mph
Pressure: 30.08 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 5.6

Five Day Weather Forecast

Partly Cloudy
Fri
H: 84°F
L: 65°F
Heavy rain
Sat
H: 82°F
L: 56°F
Fog
Sun
H: 86°F
L: 69°F
Fog
Mon
H: 92°F
L: 68°F
Patchy rain nearby
Tue
H: 89°F
L: 68°F

Air Quality

AQI: 1 - Good
PM2.5: 29.97 μg/m3
PM10: 30.34 μg/m3
Carbon Monoxide: 623.45 μg/m3
Nitrogen Dioxide: 4.26 μg/m3
Sulphur Dioxide: 0.37 μg/m3
Ozone: 88 μg/m3

Astronomical

Sunrise: 6:17 AM
Sun Transit: 1:44 PM
Sunset: 9:11 PM
Daylight: 14 hrs 54 mins
Moonrise: 6:57 AM
Moon Transit: 2:38 PM
Moonset: 10:04 PM
Moon Phase: New
Moon Illumination: 3.1%

Best Times for Fishing or Hunting

Major Periods

2:28 AM - 4:58 AM
2:08 PM - 4:38 PM

Minor Periods

9:34 PM - 11:04 PM
6:27 AM - 7:57 AM

Action Rating: 5 out of 5

Air Quality Alert issued July 25 at 7:34AM EDT by NWS Gaylord MI

Non-Weather Emergency Message. Not sent to IPAWS.

Effective: Fri July 25, 2025, 7:34 AM
Expires: Sat July 26, 2025, 1:00 AM

The Michigan Department of Environmental Quality has issued an Air Quality Advisory for Friday July 25, for elevated levels of fine particulates (PM2.5). Pollutants are expected to be in the Unhealthy for Sensitive Groups range. The alert is in effect for the following Michigan Counties, Roscommon, Charlevoix, Missaukee, Beaver Island and surrounding islands, Wexford, Manistee, Mackinac Island/Bois Blanc Island, Emmet, Iosco, Ogemaw, Presque Isle, Cheboygan, Alcona, Eastern Mackinac, Western Mackinac, Montmorency, Otsego, Southeast Chippewa, Antrim, Central Chippewa, Leelanau, Arenac, Western Chippewa, Kalkaska, Grand Traverse, Benzie, Alpena, Oscoda, Crawford, and Gladwin. Smoke from Canadian wildfires will move over the area through this morning, and continue into central lower Michigan through the day. As smoke moves in, PM2.5 concentrations are anticipated to increase into the Unhealthy for Sensitive Groups (USG) range. There is a possibility that hourly levels reach the Unhealthy (red AQI) range for a short period of time. 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 up-to-date air quality data for Michigan, visit the MiAir site at https://air-egle.hub.arcgis.com 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 July 25 at 7:34AM EDT by NWS Gaylord MI

Non-Weather Emergency Message. Not sent to IPAWS.

Effective: Fri July 25, 2025, 7:34 AM
Expires: Sat July 26, 2025, 1:00 AM

The Michigan Department of Environmental Quality has issued an Air Quality Advisory for Friday July 25, for elevated levels of fine particulates (PM2.5). Pollutants are expected to be in the Unhealthy for Sensitive Groups range. The alert is in effect for the following Michigan Counties, Roscommon, Charlevoix, Missaukee, Beaver Island and surrounding islands, Wexford, Manistee, Mackinac Island/Bois Blanc Island, Emmet, Iosco, Ogemaw, Presque Isle, Cheboygan, Alcona, Eastern Mackinac, Western Mackinac, Montmorency, Otsego, Southeast Chippewa, Antrim, Central Chippewa, Leelanau, Arenac, Western Chippewa, Kalkaska, Grand Traverse, Benzie, Alpena, Oscoda, Crawford, and Gladwin. Smoke from Canadian wildfires will move over the area through this morning, and continue into central lower Michigan through the day. As smoke moves in, PM2.5 concentrations are anticipated to increase into the Unhealthy for Sensitive Groups (USG) range. There is a possibility that hourly levels reach the Unhealthy (red AQI) range for a short period of time. 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 up-to-date air quality data for Michigan, visit the MiAir site at https://air-egle.hub.arcgis.com 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 July 25 at 7:34AM EDT by NWS Gaylord MI

Non-Weather Emergency Message. Not sent to IPAWS.

Effective: Fri July 25, 2025, 7:34 AM
Expires: Sat July 26, 2025, 1:00 AM

The Michigan Department of Environmental Quality has issued an Air Quality Advisory for Friday July 25, for elevated levels of fine particulates (PM2.5). Pollutants are expected to be in the Unhealthy for Sensitive Groups range. The alert is in effect for the following Michigan Counties, Roscommon, Charlevoix, Missaukee, Beaver Island and surrounding islands, Wexford, Manistee, Mackinac Island/Bois Blanc Island, Emmet, Iosco, Ogemaw, Presque Isle, Cheboygan, Alcona, Eastern Mackinac, Western Mackinac, Montmorency, Otsego, Southeast Chippewa, Antrim, Central Chippewa, Leelanau, Arenac, Western Chippewa, Kalkaska, Grand Traverse, Benzie, Alpena, Oscoda, Crawford, and Gladwin. Smoke from Canadian wildfires will move over the area through this morning, and continue into central lower Michigan through the day. As smoke moves in, PM2.5 concentrations are anticipated to increase into the Unhealthy for Sensitive Groups (USG) range. There is a possibility that hourly levels reach the Unhealthy (red AQI) range for a short period of time. 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 up-to-date air quality data for Michigan, visit the MiAir site at https://air-egle.hub.arcgis.com 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 July 25 at 7:34AM EDT by NWS Gaylord MI

Non-Weather Emergency Message. Not sent to IPAWS.

Effective: Fri July 25, 2025, 7:34 AM
Expires: Sat July 26, 2025, 1:00 AM

The Michigan Department of Environmental Quality has issued an Air Quality Advisory for Friday July 25, for elevated levels of fine particulates (PM2.5). Pollutants are expected to be in the Unhealthy for Sensitive Groups range. The alert is in effect for the following Michigan Counties, Roscommon, Charlevoix, Missaukee, Beaver Island and surrounding islands, Wexford, Manistee, Mackinac Island/Bois Blanc Island, Emmet, Iosco, Ogemaw, Presque Isle, Cheboygan, Alcona, Eastern Mackinac, Western Mackinac, Montmorency, Otsego, Southeast Chippewa, Antrim, Central Chippewa, Leelanau, Arenac, Western Chippewa, Kalkaska, Grand Traverse, Benzie, Alpena, Oscoda, Crawford, and Gladwin. Smoke from Canadian wildfires will move over the area through this morning, and continue into central lower Michigan through the day. As smoke moves in, PM2.5 concentrations are anticipated to increase into the Unhealthy for Sensitive Groups (USG) range. There is a possibility that hourly levels reach the Unhealthy (red AQI) range for a short period of time. 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 up-to-date air quality data for Michigan, visit the MiAir site at https://air-egle.hub.arcgis.com 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 July 25 at 7:34AM EDT by NWS Gaylord MI

Non-Weather Emergency Message. Not sent to IPAWS.

Effective: Fri July 25, 2025, 7:34 AM
Expires: Sat July 26, 2025, 1:00 AM

The Michigan Department of Environmental Quality has issued an Air Quality Advisory for Friday July 25, for elevated levels of fine particulates (PM2.5). Pollutants are expected to be in the Unhealthy for Sensitive Groups range. The alert is in effect for the following Michigan Counties, Roscommon, Charlevoix, Missaukee, Beaver Island and surrounding islands, Wexford, Manistee, Mackinac Island/Bois Blanc Island, Emmet, Iosco, Ogemaw, Presque Isle, Cheboygan, Alcona, Eastern Mackinac, Western Mackinac, Montmorency, Otsego, Southeast Chippewa, Antrim, Central Chippewa, Leelanau, Arenac, Western Chippewa, Kalkaska, Grand Traverse, Benzie, Alpena, Oscoda, Crawford, and Gladwin. Smoke from Canadian wildfires will move over the area through this morning, and continue into central lower Michigan through the day. As smoke moves in, PM2.5 concentrations are anticipated to increase into the Unhealthy for Sensitive Groups (USG) range. There is a possibility that hourly levels reach the Unhealthy (red AQI) range for a short period of time. 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 up-to-date air quality data for Michigan, visit the MiAir site at https://air-egle.hub.arcgis.com 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.


Friday, July 25, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 74.4°F
Average Humidity: 71%
Chance of Rain: 0%
Wind: 5.6 mph
UV Index: 1.7

Air Quality

AQI: 2 - Moderate
PM2.5: 24.09 μg/m3
PM10: 24.33 μg/m3
Carbon Monoxide: 545.16 μg/m3
Nitrogen Dioxide: 3.6 μg/m3
Sulphur Dioxide: 0.38 μg/m3
Ozone: 81 μg/m3

Astronomical

Sunrise: 6:17 AM
Sun Transit: 1:44 PM
Sunset: 9:11 PM
Daylight: 14 hrs 54 mins
Moonrise: 6:57 AM
Moon Transit: 2:38 PM
Moonset: 10:04 PM
Moon Phase: New
Moon Illumination: 3.1%

Best Times for Fishing or Hunting

Major Periods

2:28 AM - 4:58 AM
2:08 PM - 4:38 PM

Minor Periods

9:34 PM - 11:04 PM
6:27 AM - 7:57 AM

Action Rating: 5 out of 5

Saturday, July 26, 2025

Weather Forecast

Conditions: Heavy rain
Average Temperature: 69.2°F
Average Humidity: 88%
Chance of Rain: 88%
Wind: 7.8 mph
UV Index: 1.3

Air Quality

AQI: 2 - Moderate
PM2.5: 28.6 μg/m3
PM10: 29.25 μg/m3
Carbon Monoxide: 671.77 μg/m3
Nitrogen Dioxide: 4.22 μg/m3
Sulphur Dioxide: 0.44 μg/m3
Ozone: 80.96 μg/m3

Astronomical

Sunrise: 6:18 AM
Sun Transit: 1:44 PM
Sunset: 9:10 PM
Daylight: 14 hrs 52 mins
Moonrise: 8:12 AM
Moon Transit: 3:26 PM
Moonset: 10:26 PM
Moon Phase: New
Moon Illumination: 0.7%

Best Times for Fishing or Hunting

Major Periods

3:18 AM - 5:48 AM
2:56 PM - 5:26 PM

Minor Periods

9:56 PM - 11:26 PM
7:42 AM - 9:12 AM

Action Rating: 3 out of 5

Sunday, July 27, 2025

Weather Forecast

Conditions: Fog
Average Temperature: 75°F
Average Humidity: 87%
Chance of Rain: 0%
Wind: 7.6 mph
UV Index: 2.5

Air Quality

AQI: 1 - Good
PM2.5: 14.07 μg/m3
PM10: 14.91 μg/m3
Carbon Monoxide: 408.26 μg/m3
Nitrogen Dioxide: 5.5 μg/m3
Sulphur Dioxide: 0.5 μg/m3
Ozone: 92.84 μg/m3

Astronomical

Sunrise: 6:19 AM
Sun Transit: 1:44 PM
Sunset: 9:09 PM
Daylight: 14 hrs 49 mins
Moonrise: 9:24 AM
Moon Transit: 4:11 PM
Moonset: 10:45 PM
Moon Phase: New
Moon Illumination: 3.8%

Best Times for Fishing or Hunting

Major Periods

4:05 AM - 6:35 AM
3:41 PM - 6:11 PM

Minor Periods

10:15 PM - 11:45 PM
8:54 AM - 10:24 AM

Action Rating: 4 out of 5

Monday, July 28, 2025

Weather Forecast

Conditions: Fog
Average Temperature: 76.5°F
Average Humidity: 78%
Chance of Rain: 0%
Wind: 8.9 mph
UV Index: 1.8

Air Quality

AQI: 1 - Good
PM2.5: 13.65 μg/m3
PM10: 14.23 μg/m3
Carbon Monoxide: 357.94 μg/m3
Nitrogen Dioxide: 5.87 μg/m3
Sulphur Dioxide: 0.5 μg/m3
Ozone: 93.96 μg/m3

Astronomical

Sunrise: 6:20 AM
Sun Transit: 1:44 PM
Sunset: 9:08 PM
Daylight: 14 hrs 47 mins
Moonrise: 10:32 AM
Moon Transit: 4:53 PM
Moonset: 11:01 PM
Moon Phase: Waxing Crescent
Moon Illumination: 9.3%

Best Times for Fishing or Hunting

Major Periods

4:47 AM - 7:17 AM
4:23 PM - 6:53 PM

Minor Periods

12:00 AM - 12:00 AM
10:02 AM - 11:32 AM

Action Rating: 2 out of 5

Tuesday, July 29, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 75.7°F
Average Humidity: 81%
Chance of Rain: 76%
Wind: 11.2 mph
UV Index: 0.1

Air Quality

AQI: 1 - Good
PM2.5: 6.11 μg/m3
PM10: 6.19 μg/m3
Carbon Monoxide: 325.46 μg/m3
Nitrogen Dioxide: 2.83 μg/m3
Sulphur Dioxide: 0.27 μg/m3
Ozone: 81.15 μg/m3

Astronomical

Sunrise: 6:22 AM
Sun Transit: 1:44 PM
Sunset: 9:06 PM
Daylight: 14 hrs 45 mins
Moonrise: 11:37 AM
Moon Transit: 5:33 PM
Moonset: 12:01 AM
Moon Phase: Waxing Crescent
Moon Illumination: 16.9%

Best Times for Fishing or Hunting

Major Periods

5:28 AM - 7:58 AM
5:03 PM - 7:33 PM

Minor Periods

11:07 AM - 12:37 AM
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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