Station List

Station 45174 - Wilmette Buoy, IL Image indicating link to RSS feed of recent meteorological observations for station 45174

Owned and maintained by Illinois-Indiana Sea Grant
Buoy
42.135 N 87.655 W (42°8'6" N 87°39'18" W)

Site elevation: 176 m above mean sea level
Air temp height: 1.5 m above site elevation
Anemometer height: 1.5 m above site elevation
Barometer elevation: 1.5 m above mean sea level
Sea temp depth: 1 m below water line

Latest NWS Marine Forecast

Meteorological Observations from Nearby Stations and Ships Image indicating link to RSS feed of recent meteorological observations near station 45174

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red diamond Stations with no data in last 8 hours
(24 hours for tsunami stations)

Conditions at 45174 as of
(9:50 am CDT)
1450 GMT on 05/18/2026:
     

Click on the graph icon in the table below to see a time series plot of the last five days of that observation.

5-day plot - Wind Direction Wind Direction (WDIR):SSW ( 210 deg true )
5-day plot - Wind Speed Wind Speed (WSPD): 11.7 kts
5-day plot - Wind Gust Wind Gust (GST): 15.5 kts
5-day plot - Wave Height Wave Height (WVHT): 1.3 ft
5-day plot - Dominant Wave Period Dominant Wave Period (DPD): 3 sec
5-day plot - Mean Wave Direction Mean Wave Direction (MWD): SE ( 137 deg true )
5-day plot - Atmospheric Pressure Atmospheric Pressure (PRES):29.90 in
5-day plot - Air Temperature Air Temperature (ATMP): 67.5 °F
5-day plot - Wind Speed at 10 Meters Wind Speed at 10 meters (WSPD10M): 13.6 kts
5-day plot - Wind Speed at 20 Meters Wind Speed at 20 meters (WSPD20M): 13.6 kts
5-day plot - Wind Speed, Wind Gust and Atmospheric Pressure Combined plot of Wind Speed, Gust, and Air Pressure
Previous observations
TIME
(CDT)		 5-day plot - Wind Direction
WDIR
 		 5-day plot - Wind Speed
WSPD
kts		 5-day plot - Wind Gust
GST
kts		 5-day plot - Wave Height
WVHT
ft		 5-day plot - Dominant Wave Period
DPD
sec		 5-day plot - Average Wave Period
APD
sec		 5-day plot - Mean Wave Direction
MWD
 		 5-day plot - Atmospheric Pressure
PRES
in		 5-day plot - Pressure Tendency
PTDY
in		 5-day plot - Air Temperature
ATMP
°F		 5-day plot - Water Temperature
WTMP
°F		 5-day plot - Dew Point
DEWP
°F		 5-day plot - Salinity
SAL
psu		 5-day plot - Visibility
VIS
nmi		 5-day plot - Tide (above MLLW)
TIDE
ft
2026-05-18 09:40 amSSW 9.7 15.5 1.3 3- SE29.90- 66.4-----
2026-05-18 09:30 amSSW 11.7 17.5 1.3 5-NNW29.90- 66.4-----
2026-05-18 09:20 amSSW 9.7 15.5 1.3 5- N29.89- 65.8-----
Wave Summary
for 45174 as of (9:50 am CDT)
1450 GMT on 05/18/2026:

These wave data are displayed in rounded times.

     

Click on the graph icon in the table below to see a time series plot of the last five days of that observation.

5-day plot - Significant Wave Height Significant Wave Height (WVHT): 1.3 ft
Previous observations
TIME
(CDT)		 5-day plot - Wave Height
WVHT
ft		 5-day plot - Swell Height
SwH
ft		 5-day plot - Swell Period
SwP
sec		 5-day plot - Swell Direction
SwD
 		 5-day plot - Wind Wave Height
WWH
ft		 5-day plot - Wind Wave Period
WWP
sec		 5-day plot - Wind Wave Direction
WWD
 		 5-day plot - Wave Steepness
STEEPNESS
 		 5-day plot - Average Wave Period
APD
sec
2026-05-18 09:40 am 1.3------ N/A-
2026-05-18 09:30 am 1.3------ N/A-
2026-05-18 09:20 am 1.3------ N/A-
Ocean Conditions at 45174 as of
(9:50 am CDT)
1450 GMT on 05/18/2026:

These oceanographic data are displayed in rounded times.

     

Click on the graph icon in the table below to see a time series plot of the last five days of that observation.

Depth (DEPTH): 3.3 ft
5-day plot - Ocean Temperature Ocean Temperature (OTMP):54.09 °F
Previous observations
TIME
(CDT)		 DEPTH
ft		 5-day plot - Ocean Temperature
OTMP
°F		 5-day plot - Conductivity
COND
mS/cm		 5-day plot - Salinity
SAL
psu		 5-day plot - Oxygen Saturation
O2%
%		 5-day plot - Oxygen Concentration
O2PPM
ppm		 5-day plot - Chlorophyll
CLCON
ug/l		 5-day plot - Turbidity
TURB
FTU		 5-day plot - pH
PH
 		 5-day plot - Eh
EH
mV
2026-05-18 09:40 am 3.354.07--------
2026-05-18 09:30 am 3.354.09--------
2026-05-18 09:20 am 3.354.01--------
Solar Radiation Conditions at 45174 as of
(9:50 am CDT)
1450 GMT on 05/18/2026:
     

Click on the graph icon in the table below to see a time series plot of the last five days of that observation.

5-day plot - Short Wave Radiation 1 Short Wave Radiation 1 (SRAD1): 356.0watts/meter2
Previous observations
TIME
(CDT)		 5-day plot - Short Wave Radiation 1
SRAD1
w/m2		 5-day plot - Short Wave Radiation 2
SRAD2
w/m2		 5-day plot - Long Wave Radiation
LRAD
w/m2
2026-05-18 09:40 am 363.8--
2026-05-18 09:30 am 332.8--
2026-05-18 09:20 am 318.9--