Discover Why Reece Weaver Swears by This $45 Halara Exercise Dress

Page Six may be compensated and/or receive an affiliate commission if you click or buy through our links. Featured pricing is subject to change. Both...
HomeUSChicago Air Quality Alert: Wildfire Smoke Keeps AQI 'Unhealthy

Chicago Air Quality Alert: Wildfire Smoke Keeps AQI ‘Unhealthy

CHICAGO (WLS) — The Chicago area is bracing under an Air Quality Alert effective until Monday evening, attributed to smoke drifting south from wildfires raging in Canada.

With the smoky skies persisting into the weekend, numerous outdoor activities faced disruptions due to compromised air quality.

ABC7 Chicago is now streaming 24/7. Click here to watch

According to meteorologists at ABC7 AccuWeather, though the air in Chicago was deemed “unhealthy” on Sunday, the concentration of smoke wasn’t as severe as seen last Thursday.

On that particularly concerning Thursday, Chicago’s Air Quality Index (AQI) soared to a staggering 747, whereas Sunday morning brought a more moderate reading of 156.

Air Quality Index on Sunday, July 19, 2026.

Air Quality Index on Sunday, July 19, 2026.

The forecast suggests a gradual improvement in air quality as the day advances, especially heading into the overnight hours leading up to Monday.

The National Weather Service extended the Air Quality Alert until Monday night for most of the Chicago area and northwest Indiana.

The wind direction changes on Monday, which could help with air quality.

Meteorologists said the smoke could make its way back to the Chicago area throughout the week.

On Monday, most of the Chicago area will be under a Level 2 risk for severe weather.

Meteorologists said some mid-day showers could be expected. A cold front could bring strong storms into the Chicago area on Monday evening.

Health impact

Health experts warned that wildfire smoke contains harmful pollutants.

Dr. Soledad Cortina, a cornea specialist with the Illinois Society for Eye Physicians and Surgeons and University of Illinois Chicago Department of Ophthalmology, said the tiny particles in the smoke could have lasting health effects.

“Some of the components of wildfire are similar to those of like smoke and tobacco, and we know how damaging that is to the eyes and certain chronic conditions,” said Dr. Cortina.

Patricia Ward, the Head Scientist at the Griffin Museum of Science and Industry, said that weather patterns like these could continue to happen in the future.

“I think we are seeing that more and more across the U.S., North America, in general and around the world in other places too. The expectation is this climate change is going to continue to contribute more extreme weather,” Ward said.

READ ALSO | As smoke from Canadian wildfires blankets the US, can wearing a mask help?

Experts also cautioned that poor air quality can affect people indoors. HVAC technicians are encouraging homeowners to inspect their air filters as smoke and airborne particles remain a concern.

“Even if the filter looks white – nice, white and clean, if you hold it up to a light and you can’t see the light through it, that means that it’s clogged up,” said Karol Derezinski, a technician with Shavitz Heating and Air Conditioning.

AAA also recommends using a vehicle’s air conditioning in recirculate mode to reduce smoke exposure inside a car by limiting the amount of outside air entering the cabin.

The smoke and haze blanketing the Chicago area caused low visibility and was expected to create some delays at O’Hare airport.

Health experts said the air is unhealthy for everyone to breathe and are encouraging people to avoid or limit time outdoors until the air quality gets better.

“If you can see it, and you can smell it, you’re breathing it in…so recommendations right now: if you don’t have to go out, then stay home,” Dr. Juanita Mora of the American Lung Association, said.

Doctors also recommend that people stay hydrated, which can help the respiratory system in these smoky conditions.

Cook County Radar | DuPage County Radar | Will County Radar | Lake County Radar (IL) | Kane County Radar | Northwest Indiana Radar


Copyright © 2026 WLS-TV. All Rights Reserved.