Wildfire Smoke and Severe Thunderstorms in the East; Monsoon Thunderstorms in the Southwest

Wildfire smoke continues to impact air quality from the Great Lakes region into New England and the Mid-Atlantic today with widespread Air Quality Alerts in effect. Severe thunderstorms are expected across portions of the Ohio Valley and Lower Great Lakes into the Mid-Atlantic and Northeast, this afternoon into the evening. Monsoonal thunderstorms may bring areas of flooding to the Southwest. Read More >

Hazardous Weather Conditions

For More Weather Information:

Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

This Afternoon
High: 82 °F
NNE 10kt
1ft
Tonight
Low: 70 °F
NNE 15kt
2-4ft

Small Craft Advisory
Sunday
High: 74 °F
NE 10kt
1-3ft
Sunday Night
Low: 69 °F
Light Wind
< 1ft
Monday
High: 86 °F
SSW 10kt
< 1ft
Monday Night
Low: 74 °F
SW 15kt
1ft
Tuesday
High: 85 °F
NNW 15kt
1ft
Tuesday Night
Low: 68 °F
N 20kt
6ft
Wednesday
High: 74 °F
N 15kt
4-6ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 4:51 pm CDT Jul 18, 2026
Forecast Valid: 4pm CDT Jul 18, 2026-6pm CDT Jul 25, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

NNE wind around 10 kt, with gusts as high as 15 kt. Patchy smoke after 5pm. Waves around 1 ft.

Tonight

NNE wind 10 to 15 kt, with gusts as high as 20 kt. Patchy smoke. Waves 2 to 4 ft.

Sunday

NE wind around 10 kt. Areas of smoke. Waves 1 to 3 ft.

Sunday Night

Variable winds 5 kt or less. Patchy smoke before 8pm, then Patchy smoke after 11pm. Waves 1 ft or less.

Monday

SSW wind 5 to 10 kt, with gusts as high as 15 kt. Mostly sunny. Waves 1 ft or less.

Monday Night

SW wind 10 to 15 kt. Showers likely and possibly a thunderstorm. Waves around 1 ft.

Tuesday

WSW wind 10 to 15 kt becoming NNW in the afternoon. Winds could gust as high as 20 kt. A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then a slight chance of showers and thunderstorms after 1pm. Waves around 1 ft.

Tuesday Night

N wind 15 to 20 kt. Mostly clear. Waves 2 ft building to 6 ft.

Wednesday

N wind around 15 kt. Sunny. Waves 4 to 6 ft. occasionally to 8ft.

*Notices:

This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.