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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 12:20 pm CST on 12/29/2025 (DOY 363 18:20 GMT)
(Updated every 15 minutes)
Wind Speed:   25.5 kts   (13.1 m/s)
Max Wind Speed:   31.3 kts   (16.1 m/s)
Wind Direction:   299° (WNW)
Air Temperature:   24.3 °F   (-4.3 °C)
Wind Chill:   7.2 °F   (-13.8 °C)
Dew Point:   16.0 °F   (-8.9 °C)
Relative Humidity:   70.4 %
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
%
20253631200 24.3 28.6 31.3 305 24.6 8.1 17.1 72.7
20253631100 21.6 24.9 30.7 286 24.1 8.1 17.9 77.2
20253631000 25.9 29.0 32.5 281 22.8 5.2 16.5 76.4
20253630900 29.4 33.0 36.5 284 21.6 2.5 15.9 78.6
20253630800 30.7 36.0 36.0 280 19.8 -0.3 15.0 81.6
20253630700 30.7 37.5 38.1 267 17.2 -3.7 13.3 84.4
20253630600 31.3 36.9 40.8 269 16.7 -4.6 12.2 82.2
20253630500 36.4 42.6 46.9 264 15.8 -7.1 10.7 80.1
20253630400 37.7 45.5 51.1 264 16.9 -5.9 10.8 76.8
20253630300 41.8 48.6 48.6 263 17.2 -6.3 10.1 73.2
20253630200 34.8 39.7 50.5 262 19.0 -2.3 13.5 78.7
20253630100 35.8 40.0 47.2 260 20.7 -0.2 15.3 79.5
20253630000 34.0 42.0 44.7 266 23.9 4.7 17.1 75.1
20253622300 28.8 36.0 45.5 257 26.6 9.6 22.0 82.6
20253622200 31.3 41.8 45.5 264 31.6 16.0 27.3 83.8
20253622100 30.3 35.4 41.6 266 35.1 20.9 33.2 92.9
20253622000 33.8 36.4 42.8 269 39.9 27.0 37.1 89.4
20253621900 34.0 37.9 41.6 272 43.3 -99.0 40.3 88.8
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: 20251229.04t.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