Chicago smog index

Southwest winds will keep temperatures warmer near the lakeshore, with highs in the low 90s. Wednesday night to Thursday morning may see showers and thunderstorms, and the weather is expected to trend cooler and drier later in the week and into the weekend, according to Petr.

Skip to content. Check back for updates. Latest Chicago weather. Chicago-area storm knocks out power, impacts air traffic and causes high waves in Lake Michigan; more than 4 inches of rain falls in some spots. Updated on Monday O3 AQI. Northbrk, Illinois Air Quality. Chiwaukee, Wisconsin Air Quality. Cary, Illinois Air Quality.

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