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Air quality alert in effect due to wildfire smoke
An Illinois 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 (USG) category of the Air Quality Index for all or almost all of Illinois.
Illinois, Michigan, Wisconsin and Minnesota are under air quality alerts for unhealthy conditions as Canadian wildfire smoke ...
Smoke has continued to cloud Illinois' air for a second straight day, but the poor air quality isn't because of a fire in the ...
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