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 October 19, 2026 at 20:48 UTC, 9087044 - Calumet Harbor, IL (CMTI2) is reporting air temperature 63°F, wind from the ENE at 7 mph gusting 8 mph, and barometric pressure 30.35 inHg.
- Air temperature
- 63°F
- Wind
- ENE 7 mph (gust 8)
- Barometric pressure
- 30.35 inHg
Observed October 19, 2026 at 20:48 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
- What is the air temperature at NOAA buoy CMTI2?
- Air temperature at NOAA buoy CMTI2 was 63°F. Measured October 19, 2026 at 20:48 UTC by NOAA station CMTI2 (9087044 - Calumet Harbor, IL).
- What is the wind doing at NOAA buoy CMTI2?
- Wind at NOAA buoy CMTI2 was from the ENE at 7 mph, with peak gusts to 8 mph. Measured October 19, 2026 at 20:48 UTC by NOAA station CMTI2 (9087044 - Calumet Harbor, IL). NDBC records wind at the station’s anemometer height, which is not the 10 m height used in marine forecasts.
- What is the barometric pressure at NOAA buoy CMTI2?
- Sea-level pressure at NOAA buoy CMTI2 was 30.35 inHg (1027.7 hPa). Measured October 19, 2026 at 20:48 UTC by NOAA station CMTI2 (9087044 - Calumet Harbor, IL). NDBC reports pressure reduced to sea level rather than the raw reading at the station.
- 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.