Passage Island, MI (PILM4) — Live Marine Conditions & Buoy Data
NOAA station PILM4, Passage Island, MI, reports real-time marine conditions from 48.223°N, 88.366°W in Lake Superior (Michigan). Readings refresh roughly every 10 minutes, and Big Buoy adds a solunar table and a multi-day weather outlook for the area.
Lake Superior Marine Conditions — Passage Island, MI is one of several stations in Lake Superior. See live buoy data and solunar for the whole area.
Current conditions at Passage Island, MI
As of August 21, 2026 at 19:00 UTC, Passage Island, MI (PILM4) is reporting wind from the N at 3 mph gusting 5 mph and barometric pressure 29.91 inHg.
- Wind
- N 3 mph (gust 5)
- Barometric pressure
- 29.91 inHg
Observed August 21, 2026 at 19:00 UTC from NOAA NDBC station PILM4. Readings update about every 10 minutes.
What NOAA buoy PILM4 measures
As a NOAA meteorological station, PILM4 reports wind speed, gusts and direction, barometric pressure, air and water temperature, and — where wave sensors are fitted — significant wave height, swell period, and wave direction.
What to watch in Lake Superior
Lake Superior is the coldest, deepest, and largest of the Great Lakes, with enough open water and fetch to build true offshore seas. Water stays cold most of the year and storms move through fast, so a sustained blow can raise steep, short-period waves with little warning — read wind, fetch, and sea state together before heading out.
Frequently asked questions
- Where is NOAA buoy PILM4 located?
- Passage Island, MI (PILM4) reports from 48.223°N, 88.366°W in Lake Superior (Michigan).
- How often is NOAA buoy PILM4 updated?
- Station PILM4 typically reports new observations about every 10 minutes. Big Buoy refreshes continuously so you always see the latest readings, alongside a solunar table for the area.
- What does NOAA buoy PILM4 measure?
- Big Buoy shows wind, barometric pressure, air and water temperature, and wave height and period where available for Passage Island, MI, plus solunar peak windows and a multi-day weather outlook.
- Is Big Buoy free to use?
- Yes. Live data for Passage Island, MI and every other NOAA buoy is free with no account required. Big Buoy Pro adds the Wind Tab, the Depth Chart, satellite overlays (sea surface temp, chlorophyll, currents), 16-day forecasts, and forecast model switching.