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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 6:50 am CST on 12/13/2025 (DOY 347 12:50 GMT)
(Updated every 15 minutes)
Wind Speed:   15.7 kts   (8.1 m/s)
Max Wind Speed:   17.9 kts   (9.2 m/s)
Wind Direction:   294° (WNW)
Air Temperature:   12.6 °F   (-10.8 °C)
Wind Chill:   -4.7 °F   (-20.4 °C)
Dew Point:   2.9 °F   (-16.2 °C)
Relative Humidity:   65.0 %
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)

[Live Webcam Image from Chicago, IL Met Station Camera 1]

[Live Webcam Image from Chicago, IL Met Station Camera 2]

[Live Webcam Image from Chicago, IL Met Station Camera 3]

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 CST Wind
Spd
kts 		Wind
Gust
kts 		Peak
Wind
kts 		Wind
Dir
deg 		Air
Tmp
F 		Wind
Chill
F 		Dew
Pt
F 		Rel
Hum
%
20253470600 18.5 20.8 21.2 294 13.1 -5.3 3.8 66.1
20253470500 18.9 21.8 23.9 293 14.5 -3.5 6.4 69.7
20253470400 18.5 20.8 22.9 280 16.7 -0.5 7.0 65.3
20253470300 19.4 21.6 24.9 301 20.1 3.6 10.2 65.1
20253470200 22.7 25.3 25.3 286 22.8 6.1 11.5 61.4
20253470100 25.3 29.0 29.0 284 26.4 10.2 19.0 73.3
20253470000 16.3 20.0 31.5 262 27.3 14.2 22.9 83.2
20253462300 19.8 22.0 27.6 260 27.1 12.8 22.4 82.1
20253462200 17.3 22.9 26.6 266 27.5 14.1 23.1 83.4
20253462100 14.2 17.9 25.9 248 27.9 15.8 22.7 80.7
20253462000 11.1 14.0 22.0 246 28.2 17.7 21.4 75.2
20253461900 11.3 12.8 19.4 250 28.4 17.8 21.4 74.7
20253461800 15.6 19.6 23.5 249 28.9 16.6 20.8 71.2
20253461700 10.3 11.5 17.9 252 29.3 19.5 20.0 67.8
20253461600 14.4 15.7 15.7 275 29.8 18.3 20.3 67.4
20253461500 13.2 15.0 16.7 269 30.9 20.1 20.8 65.9
20253461400 14.4 16.1 18.7 264 31.3 20.1 21.1 65.7
20253461300 10.1 12.4 16.9 215 30.9 21.6 21.5 67.8
Note: Peak wind is max wind gust during entire hour
Note: Wind chill is set to -99 if air temp > 40 F or wind speed < 3 mph

      right arrow Click here for recent 2-minute daily data: 20251213.04t.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