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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 4:36 am CST on 12/25/2025 (DOY 359 10:36 GMT)
(Updated every 15 minutes)
Wind Speed:   9.5 kts   (4.9 m/s)
Max Wind Speed:   10.1 kts   (5.2 m/s)
Wind Direction:   344° (NNW)
Air Temperature:   37.4 °F   (3.0 °C)
Wind Chill:   30.0 °F   (-1.1 °C)
Dew Point:   37.5 °F   (3.1 °C)
Relative Humidity:   100.4 %
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
%
20253590400 7.2 7.4 10.5 325 37.6 31.5 37.7 100.4
20253590300 9.9 10.5 10.5 359 38.8 31.6 38.8 99.8
20253590200 12.4 14.0 16.1 357 38.7 30.3 38.1 98.0
20253590100 8.4 9.5 14.2 359 39.6 33.3 38.3 95.3
20253590000 4.7 5.2 8.4 360 38.7 34.6 37.0 93.6
20253582300 6.0 6.4 6.8 026 40.5 -99.0 36.9 87.1
20253582200 1.7 2.1 8.6 138 40.1 -99.0 35.6 83.8
20253582100 5.1 6.6 6.6 135 39.2 34.9 36.4 89.4
20253582000 9.7 10.1 11.7 135 41.7 -99.0 36.5 81.4
20253581900 11.7 12.1 13.2 100 43.0 -99.0 34.6 72.1
20253581800 10.9 11.3 12.6 121 42.3 -99.0 34.1 72.6
20253581700 15.0 15.6 17.3 134 40.6 -99.0 34.0 76.8
20253581600 12.6 12.8 17.1 123 41.2 -99.0 32.9 72.0
20253581500 11.3 11.5 16.7 120 40.5 -99.0 33.1 74.6
20253581400 15.4 15.7 16.7 136 39.2 30.0 32.8 77.7
20253581300 14.0 14.4 15.2 142 38.7 29.8 32.3 77.7
20253581200 7.2 7.6 14.0 161 37.4 31.3 33.1 84.1
20253581100 7.2 8.0 8.0 154 37.8 31.7 32.7 81.9
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: 20251225.04t.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