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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 3:50 pm CDT on 04/04/2026 (DOY 094 20:50 GMT)
(Updated every 15 minutes)
Wind Speed:   25.9 kts   (13.3 m/s)
Max Wind Speed:   32.7 kts   (16.8 m/s)
Wind Direction:   258° (WSW)
Air Temperature:   48.0 °F   (8.9 °C)
Dew Point:   39.0 °F   (3.9 °C)
Relative Humidity:   70.6 %
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 		Dew
Pt
F 		Rel
Hum
%
20260941500 26.6 29.0 32.7 251 47.5 40.9 77.8
20260941400 24.1 27.8 30.9 265 47.7 43.1 83.9
20260941300 24.7 28.4 32.7 263 47.7 44.6 89.1
20260941200 21.2 23.5 35.8 257 50.0 47.1 89.6
20260941100 23.7 28.2 30.1 253 52.7 50.6 92.4
20260941000 14.2 16.9 34.2 213 55.6 55.7 100.4
20260940900 11.3 13.0 21.0 159 46.9 47.0 100.4
20260940800 18.5 19.6 20.2 182 46.8 46.9 100.4
20260940700 9.3 10.1 20.6 132 50.0 50.1 100.4
20260940600 11.9 13.0 13.0 050 44.4 44.5 100.4
20260940500 23.1 26.4 27.4 324 44.1 44.2 100.4
20260940400 3.9 4.3 25.3 347 45.1 45.2 100.4
20260940300 8.6 10.3 15.2 156 43.7 43.8 100.4
20260940200 6.4 6.8 14.4 040 40.8 40.8 99.9
20260940100 2.3 3.5 12.4 107 41.7 41.2 97.9
20260940000 5.8 8.2 11.7 024 39.9 39.2 97.4
20260932300 17.3 21.4 24.1 098 39.4 37.4 92.4
20260932200 10.7 11.9 18.3 045 38.5 36.5 92.5
Note: Peak wind is max wind gust during entire hour

      right arrow Click here for recent 2-minute daily data: 20260404.04t.txt.txt, data format (metadata)
      right arrow Click here for past data: 2026 | 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