Station Name: South Haven Buoy, MI
Station Type: Buoy
Data Source: National Data Buoy Center

Elevation Above Sea Level: 574 feet

Nearest Address:
Offshore
South Haven, MI 49090
Van Buren County

GPS Coordinates: 42.397, -86.331

Nearby Water Temperatures

Air Quality Alert issued July 19 at 9:01AM EDT by NWS Northern Indiana

Effective: Sun July 19, 2026, 9:01 AM
Expires: Tue July 21, 2026, 12:15 AM

The Michigan Department of Environment, Great Lakes, and Energy (EGLE) has declared an Air Quality Alert for Sunday and Monday, July 19 and 20, for elevated levels of fine particulate (PM2.5) in parts of southwest Michigan. Pollutants within those areas are expected to be in the Unhealthy for Sensitive Groups (USG, Orange AQI) range. The Air Quality Alert is in effect for the following counties in southwest Michigan... Berrien, Cass, St. Joseph, Branch and Hillsdale. Another smoke plume has settled over the region due to wildfires in Canada. It is expected that the increased pollution will continue into Monday; however, levels will improve during the day as winds shift to a southerly direction. With smoke lingering across the state, ozone also has the potential to increase quickly. 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: Michigan.gov/MiAir For up-to-date air quality data nationally visit EPA's Air Now site: AirNow.gov For further health information, please see MDHHS's Wildfire Smoke and You Health site: https://www.michigan.gov/mdhhs/safety-injury-prev/environmental- health/your-health-and-wildfire-smoke

Dense Smoke Advisory issued July 19 at 3:07PM CDT until July 20 at 7:00AM CDT by NWS Milwaukee/Sullivan WI

Effective: Sun July 19, 2026, 4:07 PM
Expires: Mon July 20, 2026, 12:15 AM

* WHAT...Dense smoke will reduce visibility to 2 to 3 NM. * WHERE...Lake Michigan Michigan City IN to St. Joseph MI 5 NM offshore to mid-line of lake., Lake Michigan from Seul Choix Point to Rock Island Passage 5NM offshore to Mid Lake, Lake Michigan South of a line from Seul Choix Point to the Mackinac Bridge and North of a line from Charlevoix MI to South Fox Island 5NM offshore, Lake Michigan from Charlevoix to Point Betsie MI 5NM Offshore to mid lake, Lake Michigan from Point Betsie to Manistee MI 5NM offshore to Mid Lake, Lake Michigan from Rock Island Passage to Sturgeon Bay WI 5NM offshore to mid lake, Lake Michigan from Sturgeon Bay to Two Rivers WI 5NM offshore to Mid Lake, Lake Michigan from Two Rivers to Sheboygan WI 5NM offshore to Mid Lake, Sheboygan to Port Washington WI, Port Washington to North Point Light WI, North Point Light to Wind Point WI, Wind Point WI to Winthrop Harbor IL, Lake Michigan from Sheboygan to Port Washington WI 5NM offshore to Mid Lake, Lake Michigan from Port Washington to North Point Light WI 5NM offshore to Mid Lake, Lake Michigan from North Point Light to Wind Point WI 5NM offshore to Mid Lake, Lake Michigan from Wind Point WI to Winthrop Harbor IL 5NM offshore to Mid Lake, Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5NM offshore to Mid Lake, Lake Michigan from Wilmette Harbor to Michigan City in 5NM offshore to Mid Lake, Lake Michigan from Pentwater to Manistee MI 5NM offshore to Mid Lake, Lake Michigan from Whitehall to Pentwater MI 5NM offshore to Mid Lake, Lake Michigan from Grand Haven to Whitehall MI 5NM offshore to Mid Lake, Lake Michigan from Holland to Grand Haven MI 5NM offshore to Mid Lake, Lake Michigan from South Haven to Holland MI 5NM offshore to Mid lake and Lake Michigan from St Joseph to South Haven MI 5NM offshore to Mid Lake. * WHEN...Until 7 AM CDT Monday. * IMPACTS...Low visibility will make navigation difficult.

If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use your radar and compass.

Dense Smoke Advisory issued July 19 at 6:52PM CDT until July 20 at 7:00AM CDT by NWS Milwaukee/Sullivan WI

Effective: Sun July 19, 2026, 7:52 PM
Expires: Mon July 20, 2026, 4:00 AM

* WHAT...Dense smoke will reduce visibility to as low as 1 NM. * WHERE...All open waters of Lake Michigan. * WHEN...Until 7 AM CDT Monday. * IMPACTS...Low visibility will make navigation difficult.

If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use your radar and compass.

Dense Smoke Advisory issued July 19 at 4:19PM CDT until July 20 at 7:00AM CDT by NWS Milwaukee/Sullivan WI

Effective: Sun July 19, 2026, 5:19 PM
Expires: Mon July 20, 2026, 1:30 AM

* WHAT...Dense smoke will reduce visibility to 2 to 3 NM. * WHERE...Lake Michigan Michigan City IN to St. Joseph MI 5 NM offshore to mid-line of lake., Lake Michigan from Seul Choix Point to Rock Island Passage 5NM offshore to Mid Lake, Lake Michigan South of a line from Seul Choix Point to the Mackinac Bridge and North of a line from Charlevoix MI to South Fox Island 5NM offshore, Lake Michigan from Charlevoix to Point Betsie MI 5NM Offshore to mid lake, Lake Michigan from Point Betsie to Manistee MI 5NM offshore to Mid Lake, Lake Michigan from Rock Island Passage to Sturgeon Bay WI 5NM offshore to mid lake, Lake Michigan from Sturgeon Bay to Two Rivers WI 5NM offshore to Mid Lake, Lake Michigan from Two Rivers to Sheboygan WI 5NM offshore to Mid Lake, Wind Point WI to Winthrop Harbor IL, Lake Michigan from Sheboygan to Port Washington WI 5NM offshore to Mid Lake, Lake Michigan from Port Washington to North Point Light WI 5NM offshore to Mid Lake, Lake Michigan from North Point Light to Wind Point WI 5NM offshore to Mid Lake, Lake Michigan from Wind Point WI to Winthrop Harbor IL 5NM offshore to Mid Lake, Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5NM offshore to Mid Lake, Lake Michigan from Wilmette Harbor to Michigan City in 5NM offshore to Mid Lake, Lake Michigan from Pentwater to Manistee MI 5NM offshore to Mid Lake, Lake Michigan from Whitehall to Pentwater MI 5NM offshore to Mid Lake, Lake Michigan from Grand Haven to Whitehall MI 5NM offshore to Mid Lake, Lake Michigan from Holland to Grand Haven MI 5NM offshore to Mid Lake, Lake Michigan from South Haven to Holland MI 5NM offshore to Mid lake and Lake Michigan from St Joseph to South Haven MI 5NM offshore to Mid Lake. * WHEN...Until 7 AM CDT Monday. * IMPACTS...Low visibility will make navigation difficult.

If you must navigate, proceed with caution. Use proper fog signals. Make sure all running lights are on. Remember to use your radar and compass.