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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.
Smoke from Canadian wildfires hovered over several Midwestern states Saturday, bringing warnings of unhealthy air for at ...
Illinois, Michigan, Wisconsin and Minnesota are under air quality alerts for unhealthy conditions as Canadian wildfire smoke ...
Saturday offers generous sunshine mixed with puffy fair weather clouds, comfortable temperatures and low humidity. An Air ...
Chicago officially had the worst air quality in the world for a few hours Thursday. As a haze of Canadian wildfire smoke ...
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