9087044 - Calumet Harbor, IL (CMTI2) — Live Marine Conditions & Buoy Data
NOAA station CMTI2, 9087044 - Calumet Harbor, IL, reports real-time marine conditions from 41.730°N, 87.538°W in Lake Michigan (Illinois). Readings refresh roughly every 10 minutes, and Big Buoy adds a solunar table and a multi-day weather outlook for the area.
Current conditions at 9087044 - Calumet Harbor, IL
As of August 21, 2026 at 21:18 UTC, 9087044 - Calumet Harbor, IL (CMTI2) is reporting air temperature 78°F, wind from the S at 8 mph gusting 14 mph, and barometric pressure 29.97 inHg.
- Air temperature
- 78°F
- Wind
- S 8 mph (gust 14)
- Barometric pressure
- 29.97 inHg
Observed August 21, 2026 at 21:18 UTC from NOAA NDBC station CMTI2. Readings update about every 10 minutes.
What NOAA buoy CMTI2 measures
As a NOAA meteorological station, CMTI2 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 Michigan
Lake Michigan’s long north-south axis lets a sustained northerly or southerly wind build large, steep seas over its full fetch, sometimes within hours. Summer stratification is sharp and wind-driven upwelling can swing nearshore water temperature 15–20°F in a day, so watch wind direction and buoy temperatures together.
Frequently asked questions
- Where is NOAA buoy CMTI2 located?
- 9087044 - Calumet Harbor, IL (CMTI2) reports from 41.730°N, 87.538°W in Lake Michigan (Illinois).
- How often is NOAA buoy CMTI2 updated?
- Station CMTI2 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 CMTI2 measure?
- Big Buoy shows wind, barometric pressure, air and water temperature, and wave height and period where available for 9087044 - Calumet Harbor, IL, plus solunar peak windows and a multi-day weather outlook.
- Is Big Buoy free to use?
- Yes. Live data for 9087044 - Calumet Harbor, IL 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.