05/26/2026
Air Quality Alert Message
Relayed by National Weather Service Chicago IL 1116 AM CDT Tue May 26 2026
McHenry-Lake IL-Kane-DuPage-Kendall-Grundy-Northern Cook- Central Cook-Southern Cook-Northern Will-Southern Will-Eastern Will
Including the cities of Crystal Lake, Algonquin, McHenry, Woodstock, Waukegan, Buffalo Grove, Mundelein, Gurnee, Aurora, Elgin, Naperville, Wheaton, Downers Grove, Lombard, Carol Stream, Oswego, Yorkville, Plano, Morris, Coal City, Minooka, Evanston, Des Plaines, Schaumburg, Palatine, Northbrook, Chicago, Cicero, Oak Lawn, Oak Park, La Grange, Calumet City, Oak Forest, Lemont, Orland Park, Park Forest, Joliet, Bolingbrook, Plainfield, Mokena, Channahon, Manhattan, Wilmington, Crete, Peotone, and Beecher
1116 AM CDT Tue May 26 2026
..AIR QUALITY ALERT IN EFFECT NOW THROUGH WEDNESDAY NIGHT...
The Illinois Environmental Protection Agency has determined that an Air Pollution Action Day will be declared for the greater Chicago Metropolitan Area through Wednesday Night.
A Chicago area Air Pollution Action Day is declared when weather conditions are such that widespread ozone and or particulate levels are expected to be at or above the Unhealthy for Sensitive Groups category of the Air Quality Index for multiple days. Ozone is expected to be the primary pollutant of concern.
Active children and adults, especially people with pulmonary or respiratory disease such as asthma, should limit prolonged outdoor activity.
Area residents are urged to reduce pollution levels. Air quality forecasts, current air quality, and tips on how you can reduce your
emissions can be found at
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