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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 9:36 am CST on 01/15/2025 (DOY 015 15:36 GMT)
(Updated every 15 minutes)
Wind Speed:   12.8 kts   (6.6 m/s)
Max Wind Speed:   15.0 kts   (7.7 m/s)
Wind Direction:   242° (WSW)
Air Temperature:   17.4 °F   (-8.1 °C)
Wind Chill:   3.0 °F   (-16.1 °C)
Dew Point:   6.0 °F   (-14.5 °C)
Relative Humidity:   60.5 %
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
kts 		Wind
Gust
kts 		Peak
Wind
kts 		Wind
Dir
deg 		Air
Tmp
F 		Wind
Chill
F 		Dew
Pt
F 		Rel
Hum
%
20250150900 15.4 18.7 18.7 264 15.6 -0.6 6.3 66.3
20250150800 12.4 13.8 16.9 277 13.6 -1.6 6.3 72.2
20250150700 10.7 12.4 16.5 277 14.9 1.1 8.1 74.1
20250150600 9.3 10.9 14.4 281 14.9 2.0 8.2 74.5
20250150500 8.4 10.5 11.3 276 16.2 4.4 7.3 67.7
20250150400 8.9 10.5 11.9 285 16.3 4.1 7.8 68.7
20250150300 11.1 12.6 13.0 273 16.9 3.4 7.6 66.5
20250150200 11.3 14.6 15.4 281 17.4 3.9 8.6 68.1
20250150100 14.4 16.9 20.6 292 17.8 2.7 8.3 66.1
20250150000 14.6 17.9 21.0 287 18.0 2.8 8.5 66.1
20250142300 12.4 15.0 18.1 279 18.3 4.4 9.1 66.9
20250142200 14.6 16.7 20.4 288 18.9 4.0 8.1 62.5
20250142100 14.8 15.9 21.0 288 19.2 4.4 7.9 61.2
20250142000 14.2 17.1 17.7 277 19.8 5.3 8.5 61.3
20250141900 9.5 12.1 19.4 291 20.5 8.9 9.1 61.2
20250141800 12.8 14.4 17.1 302 20.8 7.4 9.2 60.4
20250141700 14.6 16.7 17.7 290 21.2 7.0 7.6 55.4
20250141600 14.2 15.4 20.4 300 22.6 9.1 8.1 53.3
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: 20250115.04t.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