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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 2:06 pm CDT on 03/22/2025 (DOY 081 19:06 GMT)
(Updated every 15 minutes)
Wind Speed:   8.7 kts   (4.5 m/s)
Max Wind Speed:   10.7 kts   (5.5 m/s)
Wind Direction:   62° (ENE)
Air Temperature:   33.8 °F   (1.0 °C)
Wind Chill:   25.9 °F   (-3.4 °C)
Dew Point:   26.5 °F   (-3.1 °C)
Relative Humidity:   74.3 %
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
m/s 		Wind
Gust
m/s 		Peak
Wind
m/s 		Wind
Dir
deg 		Air
Tmp
C 		Wind
Chill
C 		Dew
Pt
C 		Rel
Hum
%
20250811400 4.9 6.3 6.3 070 1.0 -3.6 -3.1 74.2
20250811300 7.2 8.0 8.5 039 1.1 -4.6 -2.5 76.8
20250811200 8.1 8.8 10.8 034 1.1 -4.9 -2.3 78.2
20250811100 8.4 9.6 10.7 019 1.5 -4.5 -2.3 75.7
20250811000 10.2 11.0 13.2 008 1.7 -4.8 -1.5 79.5
20250810900 11.9 13.6 14.9 345 2.5 -4.2 -0.5 80.7
20250810800 9.5 10.1 12.0 005 2.4 -3.7 -0.5 81.3
20250810700 10.7 11.4 11.7 001 2.5 -3.9 0.7 87.7
20250810600 12.4 14.3 14.6 006 2.9 -3.8 2.4 96.3
20250810500 13.6 14.9 17.8 320 6.9 -99.0 -2.3 51.9
20250810400 11.8 12.8 17.9 305 8.0 -99.0 1.8 64.7
20250810300 14.1 16.1 16.1 311 8.2 -99.0 1.9 64.5
20250810200 13.2 15.2 15.7 301 8.9 -99.0 2.5 64.0
20250810100 11.1 12.6 16.9 292 10.2 -99.0 3.3 62.0
20250810000 12.1 13.7 16.6 276 12.0 -99.0 2.4 51.5
20250802300 6.4 7.9 12.6 265 12.7 -99.0 1.4 45.8
20250802200 12.6 13.7 17.9 215 13.0 -99.0 -1.1 37.5
20250802100 13.8 15.6 18.4 206 12.6 -99.0 -1.1 38.6
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: 20250322.04t.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