NOAA - Great Lakes Environmental Research Laboratory

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 4:36 pm CDT on 09/17/2019 (DOY 260 21:36 GMT)
(Updated at about 06,21,36,51 minutes past the hour)

Wind Speed:	7.0 kts (3.6 m/s)
Max Wind Speed:	7.6 kts (3.9 m/s)
Wind Direction:	52° (NE)
Air Temperature:	69.1 °F (20.6 °C)
Dew Point:	68.8 °F (20.5 °C)
Relative Humidity:	99.2 %
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 6X per hour)
Webcam Location & Info

6-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
Loyola University Lake Shore Campus
Loop and Lake Michigan courtesy of ABC News

---------- Previous 18 Hours (at top of hour) [English] [Metric] ----------
YEAR	DOY	CDT	Wind Spd kts	Wind Gust kts	Peak Wind kts	Wind Dir deg	Air Tmp F	Dew Pt F	Rel Hum %
2019	260	1600	6.4	7.0	7.6	062	69.1	68.5	97.9
2019	260	1500	7.8	8.4	8.7	057	68.9	67.9	96.7
2019	260	1400	7.8	8.2	10.3	047	68.5	67.6	96.9
2019	260	1300	4.9	5.1	8.0	049	68.4	67.7	97.7
2019	260	1200	3.3	4.3	5.8	011	67.5	67.6	100.4
2019	260	1100	3.1	3.3	4.3	025	67.3	67.4	100.3
2019	260	1000	5.4	6.0	6.0	045	66.9	67.0	100.3
2019	260	0900	6.4	7.6	8.9	053	66.6	66.6	100.3
2019	260	0800	5.1	5.4	7.8	050	65.8	65.9	100.3
2019	260	0700	6.8	7.4	7.8	064	65.8	65.9	100.3
2019	260	0600	3.9	4.3	8.2	037	65.5	65.6	100.3
2019	260	0500	2.9	3.1	4.5	087	64.9	65.0	100.3
2019	260	0400	3.9	4.7	4.7	102	65.1	65.2	100.3
2019	260	0300	3.7	4.1	6.4	041	65.1	65.2	100.3
2019	260	0200	4.9	5.6	6.8	062	65.1	65.2	100.3
2019	260	0100	4.9	5.2	9.3	050	64.8	64.8	100.3
2019	260	0000	6.2	7.4	9.7	055	65.8	65.9	100.3
2019	259	2300	7.2	8.6	10.1	044	65.8	65.9	100.3

Note: Peak wind is max wind gust during entire hour

Click here for today's 2-minute data: 20190917.04t.txt, data format (metadata)
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Click here for past data: 2019 | Archive

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

Real-Time Meteorological Observation NetworkChicago, IL (CHII2) Harrison-Dever Crib, approx. 2.75 miles offshore