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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 7:36 pm CST on 12/24/2025 (DOY 359 01:36 GMT)
(Updated every 15 minutes)
Wind Speed:   11.3 kts   (5.8 m/s)
Max Wind Speed:   11.5 kts   (5.9 m/s)
Wind Direction:   118° (ESE)
Air Temperature:   42.3 °F   (5.7 °C)
Dew Point:   35.5 °F   (2.0 °C)
Relative Humidity:   76.8 %
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
%
20253581900 6.0 6.2 6.8 100 6.1 -99.0 1.5 72.1
20253581800 5.6 5.8 6.5 121 5.7 -99.0 1.2 72.6
20253581700 7.7 8.0 8.9 134 4.8 -99.0 1.1 76.8
20253581600 6.5 6.6 8.8 123 5.1 -99.0 0.5 72.0
20253581500 5.8 5.9 8.6 120 4.7 -99.0 0.6 74.6
20253581400 7.9 8.1 8.6 136 4.0 -1.1 0.5 77.7
20253581300 7.2 7.4 7.8 142 3.7 -1.2 0.2 77.7
20253581200 3.7 3.9 7.2 161 3.0 -0.4 0.6 84.1
20253581100 3.7 4.1 4.1 154 3.2 -0.2 0.4 81.9
20253581000 6.2 6.3 6.3 141 3.6 -1.0 0.9 82.3
20253580900 6.4 6.5 7.0 112 3.6 -1.0 0.8 81.8
20253580800 6.8 6.9 7.0 096 3.6 -1.2 1.1 83.9
20253580700 6.0 6.3 7.3 097 3.9 -0.5 2.8 92.5
20253580600 5.4 5.5 7.3 075 4.5 -99.0 2.9 89.0
20253580500 5.7 6.0 6.0 062 4.3 0.1 2.3 86.8
20253580400 5.3 5.6 6.3 042 4.0 -0.1 1.9 85.9
20253580300 3.8 4.0 6.0 012 3.0 -0.5 1.2 88.0
20253580200 4.6 4.9 4.9 352 2.9 -1.1 0.6 84.5
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: 20251225.04t.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