Back to Met-ReCON Station Map
Alpena | Chicago | Michigan City | Milwaukee | Muskegon | Muskegon Pier Light | South Haven | Thunder Bay Island | Toledo Light #2

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 8:36 am CST on 12/10/2025 (DOY 344 14:36 GMT)
(Updated every 15 minutes)
Wind Speed:   24.7 kts   (12.7 m/s)
Max Wind Speed:   26.0 kts   (13.4 m/s)
Wind Direction:   328° (NNW)
Air Temperature:   34.2 °F   (1.2 °C)
Wind Chill:   20.8 °F   (-6.2 °C)
Dew Point:   33.1 °F   (0.6 °C)
Relative Humidity:   95.7 %
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
%
20253440800 22.4 24.3 27.8 326 35.4 23.1 32.8 90.0
20253440700 19.6 24.1 27.0 287 37.6 26.7 36.0 94.1
20253440600 22.7 26.2 28.6 271 38.5 27.1 36.1 91.0
20253440500 22.9 27.0 28.2 266 39.7 28.8 36.3 87.4
20253440400 24.9 29.4 32.1 260 41.2 -99.0 35.9 81.2
20253440300 27.4 31.7 34.2 247 41.7 -99.0 36.2 80.4
20253440200 26.4 30.9 37.3 224 41.7 -99.0 35.5 78.3
20253440100 27.6 31.1 36.4 212 39.7 27.8 35.0 82.8
20253440000 37.1 44.5 44.5 215 37.8 23.5 37.4 98.6
20253432300 34.2 38.3 43.7 204 38.5 24.9 34.0 83.7
20253432200 27.2 30.9 40.2 197 36.7 23.7 36.3 98.5
20253432100 23.7 25.7 32.7 191 37.6 25.7 35.4 91.9
20253432000 19.8 21.6 26.4 185 36.9 25.7 34.4 90.6
20253431900 16.1 17.5 22.9 175 36.1 25.8 33.1 88.5
20253431800 13.2 15.0 20.2 194 35.8 26.4 32.8 88.6
20253431700 17.3 18.3 18.5 191 36.5 25.9 31.4 81.5
20253431600 9.1 11.1 20.0 209 37.2 30.0 31.3 78.8
20253431500 7.2 9.9 15.4 242 37.0 30.8 30.8 78.0
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: 20251210.04t.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