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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 7:50 am CST on 12/08/2025 (DOY 342 13:50 GMT)
(Updated every 15 minutes)
Wind Speed:   10.7 kts   (5.5 m/s)
Max Wind Speed:   14.2 kts   (7.3 m/s)
Wind Direction:   117° (ESE)
Air Temperature:   25.3 °F   (-3.7 °C)
Wind Chill:   14.3 °F   (-9.9 °C)
Dew Point:   15.8 °F   (-9.0 °C)
Relative Humidity:   66.9 %
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 CST 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
%
20253420700 5.9 7.0 8.0 106 -3.7 -10.1 -9.4 64.7
20253420600 5.0 6.5 7.9 091 -3.3 -9.0 -9.4 62.9
20253420500 5.0 6.0 8.1 071 -3.2 -8.9 -9.6 61.2
20253420400 7.1 8.3 8.3 094 -2.9 -9.7 -9.4 61.1
20253420300 7.6 8.6 9.6 095 -2.6 -9.5 -8.9 62.2
20253420200 7.2 8.0 8.8 097 -2.2 -8.8 -9.3 58.4
20253420100 6.6 7.5 9.8 070 -2.3 -8.7 -9.6 57.5
20253420000 6.6 11.0 11.0 069 -2.1 -8.4 -8.8 60.4
20253412300 5.5 6.7 11.4 053 -1.5 -7.1 -8.9 57.2
20253412200 8.7 10.0 12.3 061 -1.2 -8.2 -8.2 59.1
20253412100 11.2 12.3 13.9 058 -0.8 -8.5 -7.4 61.0
20253412000 10.6 11.8 14.1 036 -0.6 -8.0 -7.6 59.3
20253411900 9.9 10.6 13.9 016 -1.0 -8.3 -7.6 61.0
20253411800 10.9 13.0 14.7 034 -1.6 -9.4 -7.1 66.0
20253411700 9.8 11.2 14.7 011 -2.9 -10.8 -7.5 70.8
20253411600 9.9 10.9 13.8 003 -3.3 -11.4 -8.4 68.1
20253411500 10.8 12.2 14.6 356 -3.6 -12.1 -8.8 67.1
20253411400 12.9 14.8 15.0 357 -3.3 -12.3 -7.2 74.4
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: 20251208.04t.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