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Real-Time Meteorological Observation Network
Chicago, IL  (CHII2)  Harrison-Dever Crib, approx. 2.75 miles offshore

See Metadata File for full description of instruments and parameters, as well as site maps. See also rtmon status, webcam status
Conditions at 3:20 am CDT on 07/12/2025 (DOY 193 08:20 GMT)
(Updated every 15 minutes)
Wind Speed:   15.0 kts   (7.7 m/s)
Max Wind Speed:   17.1 kts   (8.8 m/s)
Wind Direction:   144° (SE)
Air Temperature:   81.3 °F   (27.4 °C)
Dew Point:   82.2 °F   (27.9 °C)
Relative Humidity:   102.8 %
Data & Plots of Previous 3 Hours (2 minute increments)
Data & Plots of Previous 5 Days (hourly increments)
         1 Day Windrose Plot, 5 Day Windrose Plot, (explanation)         
Click on image to enlarge
(images updated every 30 minutes)

[Chicago, IL Webcam is Down]

[Chicago, IL Webcam is Down]

[Chicago, IL Webcam is Down]

18-hr animations: 1  2  3
Previous 48 images (top of hour only): 1  2  3
All Images (past 10 days)

Nearby Webcams (external sites):
Webcams of Chicago courtesy of WXYZ Webcams
Loop and Lake Michigan courtesy of ABC News

---------- Previous 18 Hours (at top of hour)  [English] [Metric] ----------
YEARDOY CDT Wind
Spd
kts 		Wind
Gust
kts 		Peak
Wind
kts 		Wind
Dir
deg 		Air
Tmp
F 		Dew
Pt
F 		Rel
Hum
%
20251930300 15.6 16.5 17.5 126 80.8 81.9 103.8
20251930200 13.4 14.8 20.8 101 79.3 80.4 103.7
20251930100 6.6 7.6 15.9 050 78.3 79.3 103.6
20251930000 10.9 11.7 20.4 060 79.2 78.9 99.2
20251922300 12.8 13.2 16.9 006 78.3 79.1 102.7
20251922200 27.8 32.1 32.1 290 84.4 76.8 77.7
20251922100 20.0 20.8 37.5 175 88.9 82.0 79.7
20251922000 20.2 22.4 25.7 174 90.0 81.8 76.6
20251921900 20.0 21.4 23.1 175 90.5 82.5 76.9
20251921800 17.7 18.7 26.4 169 90.7 81.5 74.0
20251921700 15.2 17.1 17.5 199 93.2 79.7 64.2
20251921600 10.7 11.7 19.2 164 91.6 81.4 71.7
20251921500 11.5 12.2 13.8 173 92.3 80.0 66.9
20251921400 12.8 13.6 16.7 183 89.2 81.5 77.6
20251921300 11.3 12.4 16.7 160 86.0 82.4 88.8
20251921200 9.9 11.5 17.5 168 85.6 81.8 88.2
20251921100 9.7 10.3 11.5 206 83.5 81.4 93.3
20251921000 9.3 10.3 10.3 212 82.2 82.0 99.3
Note: Peak wind is max wind gust during entire hour

      right arrow Click here for recent 2-minute daily data: 20250712.04t.txt.txt, data format (metadata)
      right arrow Click here for past data: 2025 | Archive

The NDBC station ID for this station is: CHII2
Access current marine observations on your mobile device. See NDBC's mobile access page.
These data are also available from NDBC website and NDBC's Dial-a-Buoy Program.
See also NWS Marine Forecast for this area, and NWS Recreational Beach Forecast

Realtime Data Disclaimer
Special thanks to City of Chicago, IL / Water Department, USACE


Additional Great Lakes Meteorological Observations

» NWS, Grand Rapids Office: Near-Realtime Marine Weather, includes current conditions and forecasts
» NWS, White Lake Office: Near-Realtime Marine Weather, includes current conditions and forecasts
» NDBC Great Lakes ImageMap showing U.S. and Canadian Buoys and C-MAN Stations
» NOAA CoastWatch Great Lakes NOAAPORT Data, includes all station types
» NOAA's NowCoast: Web mapping portal to real-time coastal observations
» Winds courtesy of iWindsurf.com
» NWS Great Lakes Marine Text Forecasts by Zone
» Links to Great Lakes Water Temperature, Wind/Wave Data, & Water Levels
» GLIN: Great Lakes Information Network

Contact:
General Information & Media Inquiries:
oar.glerl.www@noaa.gov
(734) 741-2235 		Data Inquiries:
oar.glerl.data@noaa.gov