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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 2:36 am CDT on 03/22/2025 (DOY 081 07:36 GMT)
(Updated every 15 minutes)
Wind Speed:   21.6 kts   (11.1 m/s)
Max Wind Speed:   26.4 kts   (13.6 m/s)
Wind Direction:   308° (NW)
Air Temperature:   47.1 °F   (8.4 °C)
Dew Point:   35.8 °F   (2.1 °C)
Relative Humidity:   64.5 %
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 CDT Wind
Spd
kts 		Wind
Gust
kts 		Peak
Wind
kts 		Wind
Dir
deg 		Air
Tmp
F 		Wind
Chill
F 		Dew
Pt
F 		Rel
Hum
%
20250810200 25.7 29.5 30.3 301 48.0 -99.0 36.5 64.0
20250810100 21.6 24.5 32.9 292 50.4 -99.0 37.9 62.0
20250810000 23.5 26.6 32.3 276 53.6 -99.0 36.3 51.5
20250802300 12.4 15.4 24.5 265 54.9 -99.0 34.5 45.8
20250802200 24.5 26.6 34.8 215 55.4 -99.0 30.0 37.5
20250802100 26.8 30.3 35.8 206 54.7 -99.0 30.1 38.6
20250802000 27.4 30.5 36.0 204 54.7 -99.0 31.4 40.7
20250801900 27.2 30.7 41.2 202 54.9 -99.0 31.3 40.2
20250801800 38.3 46.9 46.9 203 56.8 -99.0 29.9 35.4
20250801700 39.1 46.1 49.4 206 58.6 -99.0 29.9 33.2
20250801600 39.7 47.6 51.3 209 57.2 -99.0 31.2 36.8
20250801500 41.6 49.0 50.2 203 55.4 -99.0 31.4 39.6
20250801400 37.9 43.2 52.3 203 53.4 -99.0 31.0 42.0
20250801300 29.0 31.9 47.2 204 51.6 -99.0 31.3 45.4
20250801200 42.0 49.2 49.2 198 48.2 -99.0 27.7 44.5
20250801100 33.6 37.3 49.6 206 46.0 -99.0 26.5 46.1
20250801000 35.4 39.3 47.8 199 43.2 -99.0 26.9 52.2
20250800900 28.4 32.7 46.1 210 41.5 -99.0 26.3 54.4
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