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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 6:06 am CDT on 03/20/2025 (DOY 079 11:06 GMT)
(Updated every 15 minutes)
Wind Speed:   25.7 kts   (13.2 m/s)
Max Wind Speed:   28.6 kts   (14.7 m/s)
Wind Direction:   321° (NW)
Air Temperature:   32.7 °F   (0.4 °C)
Wind Chill:   18.7 °F   (-7.4 °C)
Dew Point:   32.8 °F   (0.5 °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 CDT Wind
Spd
kts 		Wind
Gust
kts 		Peak
Wind
kts 		Wind
Dir
deg 		Air
Tmp
F 		Wind
Chill
F 		Dew
Pt
F 		Rel
Hum
%
20250790600 27.0 28.4 29.5 321 32.7 18.4 32.8 100.4
20250790500 24.5 26.0 35.4 327 33.4 19.9 33.5 100.4
20250790400 28.4 30.9 41.0 339 33.6 19.3 33.7 100.5
20250790300 35.0 40.2 43.2 350 35.8 21.0 35.2 97.8
20250790200 39.1 43.0 47.4 353 36.9 21.9 33.9 88.9
20250790100 39.3 43.4 49.4 360 36.9 21.9 36.1 97.0
20250790000 33.2 38.5 45.1 357 37.0 23.1 36.3 97.1
20250782300 36.2 39.3 44.3 344 37.6 23.4 36.7 96.6
20250782200 32.1 36.5 42.2 349 38.3 25.0 37.5 96.9
20250782100 28.8 33.2 39.7 354 39.0 26.6 38.5 98.1
20250782000 32.5 37.7 45.9 356 39.7 27.0 39.3 98.3
20250781900 29.9 32.9 39.9 342 42.8 -99.0 43.0 100.8
20250781800 14.2 15.6 30.7 335 42.6 -99.0 42.9 100.9
20250781700 18.5 20.0 43.9 346 39.2 29.1 39.4 100.8
20250781600 20.2 22.0 22.2 024 38.8 28.2 39.0 100.8
20250781500 10.9 11.9 19.4 350 39.4 31.9 39.6 100.9
20250781400 26.4 28.8 29.9 044 38.8 26.8 39.1 100.9
20250781300 16.5 17.9 27.6 001 39.2 29.7 39.4 100.9
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: 20250320.04t.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