Station Name: EAST SUPERIOR -70 NM NE Marquette, MI
Station Type: Other
Data Source: National Data Buoy Center

Elevation Above Sea Level: 0 feet

Nearest Address:
Offshore
Copper Harbor, MI 49918
Keweenaw County

GPS Coordinates: 47.585, -86.585

Nearby Water Temperatures

Air Quality Alert issued July 18 at 11:34AM EDT by NWS Marquette MI

Effective: Sat July 18, 2026, 11:34 AM
Expires: Sun July 19, 2026, 3:30 PM

The Michigan Department of Environment, Great Lakes, and Energy (EGLE) has issued an Air Quality Alert for July 18 and July 19, 2026, for elevated levels of fine particulate due to wildfire smoke. Concentrations on Saturday will range from Unhealthy for Sensitive Groups (USG) in northern half of the lower peninsula to Unhealthy across the upper peninsula. On Sunday concentrations will range from USG across the lower peninsula to Unhealthy in the upper peninsula. Saturday, July 18, 2026, Air Quality Alert covers the upper peninsula, and the northern half of the lower peninsula. Sunday, July 19, 2026, will be a Statewide Air Quality Alert. Smoke has improved across the southern portion of Michigan early Saturday; however, another plume is forecast to track through the state Saturday, lasting into Sunday. The upper peninsula will be most affected by the smoke on Saturday with fine particulate levels deteriorating from north to south through Saturday. Concentrations will be high enough across northern areas to warrant an Air Quality Alert for Saturday, and by Sunday levels will be high enough to warrant another statewide Alert. 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 conditions like asthma. Watch for symptoms including wheezing, coughing, chest tightness, dizziness, or burning in nose, throat, and eyes. You can help reduce air pollution by limiting activities, 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 EPAs Air Now site: AirNow.gov For further health information, please see MDHHS Wildfire Smoke and Your Health site: https://www.michigan.gov/mdhhs/safety-injury-prev/environmental-health/your-health- and-wildfire-smoke Air Quality Alert Michigan Department of Environment, Great Lakes, and Energy July 18, 2026

Small Craft Advisory issued July 18 at 4:23AM EDT until July 18 at 6:00PM EDT by NWS Marquette MI

Effective: Sat July 18, 2026, 4:23 AM
Expires: Sat July 18, 2026, 4:30 PM

* WHAT...For the Small Craft Advisory, northwest winds 10 to 20 kt with gusts up to 30 kt and waves 2 to 5 ft occurring. For the Dense Smoke Advisory, dense smoke will reduce visibility to less than one nautical mile. * WHERE...Huron Islands to Marquette MI and Marquette to Munising MI. * WHEN...For the Small Craft Advisory, until 6 PM EDT this evening. For the Dense Smoke Advisory, from 8 AM this morning to 8 PM EDT Sunday. * IMPACTS...Conditions will be hazardous to small craft. Low visibility will make navigation difficult.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. 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 18 at 4:23AM EDT until July 19 at 8:00PM EDT by NWS Marquette MI

Effective: Sat July 18, 2026, 4:23 AM
Expires: Sat July 18, 2026, 4:30 PM

* WHAT...For the Small Craft Advisory, northwest winds 10 to 20 kt with gusts up to 30 kt and waves 2 to 5 ft occurring. For the Dense Smoke Advisory, dense smoke will reduce visibility to less than one nautical mile. * WHERE...Huron Islands to Marquette MI and Marquette to Munising MI. * WHEN...For the Small Craft Advisory, until 6 PM EDT this evening. For the Dense Smoke Advisory, from 8 AM this morning to 8 PM EDT Sunday. * IMPACTS...Conditions will be hazardous to small craft. Low visibility will make navigation difficult.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. 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.

Small Craft Advisory issued July 18 at 11:03AM EDT until July 18 at 8:00PM EDT by NWS Marquette MI

Effective: Sat July 18, 2026, 11:03 AM
Expires: Sat July 18, 2026, 11:15 PM

* WHAT...For the Small Craft Advisory, northwest winds 10 to 20 kt with gusts up to 30 kt and waves 2 to 5 ft occurring. For the Dense Smoke Advisory, dense smoke will reduce visibility to less than one nautical mile. * WHERE...Huron Islands to Marquette MI and Marquette to Munising MI. * WHEN...For the Small Craft Advisory, until 8 PM EDT this evening. For the Dense Smoke Advisory, until 8 PM EDT Sunday. * IMPACTS...Conditions will be hazardous to small craft. Low visibility will make navigation difficult.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. 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 18 at 11:03AM EDT until July 19 at 8:00PM EDT by NWS Marquette MI

Effective: Sat July 18, 2026, 11:03 AM
Expires: Sat July 18, 2026, 11:15 PM

* WHAT...For the Small Craft Advisory, northwest winds 10 to 20 kt with gusts up to 30 kt and waves 2 to 5 ft occurring. For the Dense Smoke Advisory, dense smoke will reduce visibility to less than one nautical mile. * WHERE...Huron Islands to Marquette MI and Marquette to Munising MI. * WHEN...For the Small Craft Advisory, until 8 PM EDT this evening. For the Dense Smoke Advisory, until 8 PM EDT Sunday. * IMPACTS...Conditions will be hazardous to small craft. Low visibility will make navigation difficult.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. 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.