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 >

Last Update: 349 AM CDT Sat Jul 18 2026

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Chicago, IL Local Forecast Office

8NM ESE Chicago IL

Marine Zone Forecast

Today
West winds 15 to 20 kt becoming north late. Chance of showers and thunderstorms. Waves 1 to 2 ft building to 2 to 4 ft.
Tonight
Northeast winds 15 to 25 kt. Patchy smoke. Waves 4 to 7 ft occasionally to 9 ft.
Sunday
East winds around 10 kt becoming northeast. Patchy smoke. Waves 3 to 5 ft subsiding to 2 to 4 ft.
Sunday Night
East winds around 10 kt becoming south overnight. Mostly clear. Waves 1 to 2 ft.



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349 AM CDT Sat Jul 18 2026
 
 

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