The Illinois Environmental Protection Agency has issued an Air Pollution Action Day for the Chicago Metropolitan area for Thursday, June 5, because of elevated particle pollution caused by wildfire smoke in the region. 

Regional air quality is expected to reach the orange level or “Unhealthy for Sensitive Groups.” This is the first Action Day issued by Illinois EPA for 2025.

The area affected includes the counties of Cook, DuPage, Kane, Kendall, Grundy, Lake, McHenry and Will. 

Canadian wildfire smoke at the surface is expected throughout much of Illinois, with the highest concentrations in the northern third of the state.

For updates on air quality, check AirNow.gov or sign up for EnviroFlash alerts. 

Individuals most at risk due to elevated air pollution, including ground-level ozone and particle pollution, are those with respiratory or pulmonary disorders, as well as children and adults who are active outdoors. 

Sensitive individuals should follow their doctor’s advice. Some symptoms to look out for include wheezing, coughing, a fast heartbeat, fatigue, chest pain, and shortness of breath. If symptoms worsen, call a physician or 911.

The Illinois Department of Public Health has established a Wildfire Smoke webpage to provide resources and information. In addition, the U.S. EPA has developed an Air Quality Guide for Particle Pollution.

Businesses and residents in the region are encouraged to take the listed steps below to reduce contributions to air pollution every day, but especially on Action Days. Actions include:

• Limit driving – combine errands, walk, or bike if possible.
• If driving, avoid idling, consolidate errands, and keep your vehicle and other engines properly tuned.
• Conserve energy to reduce energy demands.
• Use environmentally friendly household and cleaning products.
• Avoid using gasoline-powered equipment like lawnmowers and leaf blowers on Air Pollution Action Days.
• Notify colleagues, friends, and family to help protect their health and encourage actions.

Additional information on air quality and Air Pollution Action Days in Illinois is available here.