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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 0:36 am CDT on 03/17/2025 (DOY 076 05:36 GMT)
(Updated every 15 minutes)
Wind Speed:   12.4 kts   (6.4 m/s)
Max Wind Speed:   13.8 kts   (7.1 m/s)
Wind Direction:   279° (W)
Air Temperature:   35.4 °F   (1.9 °C)
Wind Chill:   26.2 °F   (-3.2 °C)
Dew Point:   26.2 °F   (-3.2 °C)
Relative Humidity:   68.9 %
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 CDT Wind
Spd
m/s 		Wind
Gust
m/s 		Peak
Wind
m/s 		Wind
Dir
deg 		Air
Tmp
C 		Wind
Chill
C 		Dew
Pt
C 		Rel
Hum
%
20250760000 6.9 7.8 8.4 273 2.0 -3.3 -3.2 68.4
20250752300 7.0 7.8 9.7 267 2.4 -2.8 -3.9 62.9
20250752200 5.6 6.4 7.9 259 2.3 -2.3 -5.0 58.6
20250752100 3.4 4.3 6.3 252 2.4 -0.9 -4.8 58.9
20250752000 3.3 3.6 5.4 256 2.3 -1.0 -4.8 59.6
20250751900 4.7 5.2 6.0 286 1.8 -2.5 -4.0 65.3
20250751800 6.2 9.1 9.1 309 1.3 -3.9 -3.5 70.5
20250751700 8.8 10.1 10.1 297 1.4 -4.8 -3.0 72.7
20250751600 7.8 9.0 11.2 300 1.7 -4.0 -2.0 76.5
20250751500 5.7 6.7 11.0 327 1.1 -3.9 -0.9 86.5
20250751400 10.2 11.2 11.2 320 0.3 -6.7 -0.8 92.6
20250751300 11.2 12.6 13.2 315 -0.1 -7.5 -0.4 97.6
20250751200 12.2 12.7 13.2 312 0.1 -7.5 -0.4 96.2
20250751100 7.5 8.2 12.9 300 0.8 -5.1 0.3 96.1
20250751000 11.0 12.3 13.0 303 0.8 -6.3 0.2 95.6
20250750900 9.3 10.3 14.2 320 2.0 -4.2 0.1 87.5
20250750800 8.5 10.0 13.0 327 2.6 -3.1 0.7 87.2
20250750700 8.9 9.8 11.8 325 2.9 -2.9 1.4 90.1
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: 20250317.04t.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