Oak St., Chicago, IL (OKSI2) — Live Marine Conditions & Buoy Data
NOAA station OKSI2, Oak St., Chicago, IL, reports real-time marine conditions from 41.912°N, 87.624°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 Oak St., Chicago, IL
As of October 19, 2026 at 19:00 UTC, Oak St., Chicago, IL (OKSI2) is reporting air temperature 62°F and wind from the ESE at 9 mph gusting 11 mph.
- Air temperature
- 62°F
- Wind
- ESE 9 mph (gust 11)
Observed October 19, 2026 at 19:00 UTC from NOAA NDBC station OKSI2. Readings update about every 10 minutes.
What NOAA buoy OKSI2 measures
As a NOAA meteorological station, OKSI2 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 Oak St., Chicago?
- Air temperature at Oak St., Chicago was 62°F. Measured October 19, 2026 at 19:00 UTC by NOAA station OKSI2 (Oak St., Chicago, IL).
- What is the wind doing at Oak St., Chicago?
- Wind at Oak St., Chicago was from the ESE at 9 mph, with peak gusts to 11 mph. Measured October 19, 2026 at 19:00 UTC by NOAA station OKSI2 (Oak St., Chicago, IL). NDBC records wind at the station’s anemometer height, which is not the 10 m height used in marine forecasts.
- Where is NOAA buoy OKSI2 located?
- Oak St., Chicago, IL (OKSI2) reports from 41.912°N, 87.624°W in Lake Michigan (Illinois).
- How often is NOAA buoy OKSI2 updated?
- Station OKSI2 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 OKSI2 measure?
- Big Buoy shows wind, barometric pressure, air and water temperature, and wave height and period where available for Oak St., Chicago, IL, plus solunar peak windows and a multi-day weather outlook.
- Is Big Buoy free to use?
- Yes. Live data for Oak St., Chicago, 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.