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Cook County, IL
Wednesday August 6th, 2025 :: 12:48 a.m. CDT

Alert

Air Quality Alert until 12:00AM Thursday

The Illinois Environmental Protection Agency has issued an Air Pollution Action Day for Wednesday August 6th for the greater Chicago Metropolitan Area and is IN EFFECT UNTIL MIDNIGHT CDT TONIGHT. 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 (USG) category of the Air Quality Index (AQI) for multiple days. Ozone is expected to be the primary pollutant of concern, but wildfire smoke is also lingering in the region and may impact PM2.5 and Ozone AQI. 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 www.airnow.gov. Media contact...Illinois EPA.

* AFFECTED AREAS: MCHENRY ... LAKE ... KANE ... DUPAGE ... KENDALL ... GRUNDY ... NORTHERN COOK ... CENTRAL COOK ... SOUTHERN COOK ... NORTHERN WILL ... SOUTHERN WILL ... EASTERN WILL

Address/Location
Cook County, IL
118 N Clark St
Chicago, IL 60602

Contact
Emergency: 9-1-1

Alert Details

Severity:
Unknown - Severity unknown
Urgency:
Unknown - Urgency not known
Certainty:
Unknown
Category:
Meteorological (inc. flood)
Event:
Air Quality Alert

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