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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 11:36 pm CDT on 07/21/2025 (DOY 203 04:36 GMT)
(Updated every 15 minutes)
Wind Speed:   5.1 kts   (2.6 m/s)
Max Wind Speed:   5.2 kts   (2.7 m/s)
Wind Direction:   344° (NNW)
Air Temperature:   77.5 °F   (25.3 °C)
Dew Point:   76.5 °F   (24.7 °C)
Relative Humidity:   96.6 %
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
%
20252022300 3.1 3.5 5.2 053 77.7 76.3 95.4
20252022200 4.9 5.2 5.4 068 77.7 75.2 91.7
20252022100 6.0 6.6 7.2 073 77.7 75.1 91.5
20252022000 10.9 11.5 11.5 047 77.5 74.3 89.7
20252021900 13.8 14.6 15.0 034 77.2 74.6 91.6
20252021800 14.2 15.6 15.9 033 77.2 74.8 92.1
20252021700 13.4 15.0 17.5 023 77.2 75.5 94.5
20252021600 17.7 18.7 18.7 029 77.0 74.7 92.6
20252021500 13.0 13.8 19.1 031 77.5 75.7 94.1
20252021400 12.6 13.4 14.0 038 77.2 76.1 96.3
20252021300 10.3 10.9 14.8 044 77.2 75.7 95.2
20252021200 10.1 11.3 11.3 075 77.5 75.2 92.3
20252021100 13.2 14.6 14.6 070 77.4 74.4 90.4
20252021000 14.0 15.0 15.9 073 77.7 74.5 89.6
20252020900 11.5 12.6 16.1 070 78.1 76.6 95.1
20252020800 9.3 10.1 11.9 089 77.9 76.2 94.5
20252020700 12.4 13.4 13.8 073 77.7 75.3 92.0
20252020600 12.1 12.6 15.0 071 77.4 76.1 95.9
Note: Peak wind is max wind gust during entire hour

      right arrow Click here for recent 2-minute daily data: 20250722.04t.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