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 1:06 am CDT on 03/29/2020 (DOY 089 06:06 GMT)
(Updated at about 06,21,36,51 minutes past the hour)

Wind Speed:	17.3 kts (8.9 m/s)
Max Wind Speed:	20.4 kts (10.5 m/s)
Wind Direction:	212° (SSW)
Air Temperature:	63.5 °F (17.5 °C)
Dew Point:	51.5 °F (10.8 °C)
Relative Humidity:	64.6 %
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	Wind Chill F	Dew Pt F	Rel Hum %
2020	089	0100	17.1	20.2	20.4	218	63.7	-99.0	51.9	65.1
2020	089	0000	29.9	33.6	33.6	206	64.2	-99.0	55.9	74.1
2020	088	2300	23.5	25.3	39.5	175	56.5	-99.0	56.6	100.3
2020	088	2200	8.2	9.5	25.9	176	48.7	-99.0	48.8	100.2
2020	088	2100	17.7	19.4	21.2	115	48.0	-99.0	48.1	100.2
2020	088	2000	16.3	17.5	22.7	096	44.1	-99.0	44.1	100.2
2020	088	1900	6.4	7.8	18.5	053	41.9	-99.0	42.0	100.2
2020	088	1800	8.7	9.9	10.5	004	41.0	-99.0	41.1	100.2
2020	088	1700	6.2	7.0	14.2	022	41.7	-99.0	41.8	100.2
2020	088	1600	10.1	10.5	13.0	065	42.1	-99.0	42.1	100.2
2020	088	1500	11.5	11.7	14.8	080	41.2	-99.0	41.2	100.2
2020	088	1400	5.8	6.0	12.4	106	47.3	-99.0	47.4	100.2
2020	088	1300	3.5	4.1	10.3	168	42.8	-99.0	42.9	100.2
2020	088	1200	4.1	4.9	8.9	143	42.3	-99.0	42.3	100.2
2020	088	1100	4.5	5.1	5.2	167	41.0	-99.0	41.1	100.2
2020	088	1000	3.1	3.7	6.4	318	40.5	-99.0	40.5	100.2
2020	088	0900	13.4	14.0	14.6	048	41.4	-99.0	41.4	100.2
2020	088	0800	9.5	10.5	16.5	313	40.1	-99.0	40.2	100.2

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

Click here for today's 2-minute data: 20200329.04t.txt, data format (metadata)
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Click here for past data: 2020 | 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