Experts say air conditioners could be trapping, recirculating wildfire smoke particles
Though not to be compared with last Thursday, there's now a concern that without proper filtration indoors, the harmful air can stick around much longer.
Watch CBS News
Though not to be compared with last Thursday, there's now a concern that without proper filtration indoors, the harmful air can stick around much longer.
Experts say there is a common misconception that air conditioning units filter the air, but instead, it pulls in outside air and recirculate particles that have settled indoors.
Chicago air quality was the worst in the world again Monday morning with Canadian wildfire smoke lingering in the area.
Chicago air quality was the worst in the world again Monday morning with Canadian wildfire smoke lingering in the area. Darius Johnson reports.
The air quality in Chicago is not as bad as last week, but it is still unhealthy for sensitive groups. Darius Johnson reports.
Smoke from the Canadian wildfires was back to choking Chicago air on Sunday after a break for the first part of the weekend.
Smoke from the Canadian wildfires was back to choking Chicago air on Sunday after a break for the first part of the weekend. Marissa Perlman reports.
Storms are expected during the window from 2 p.m. to 6 p.m., with the best chance of stronger storms south of I-80.
With wildfire smoke clearing out of Chicago, the city's beaches and outdoor pools are reopening to the public on Friday afternoon.
While Chicago's air quality will get better Friday as the day goes on, a thick layer of smoke was still settled over the city in the morning and the AQI still put Chicago in "hazardous" range.
Chicago air quality is now hazardous as Canadian wildfire smoke has settled in an acrid haze over the area Thursday morning.
Experts on Thursday advised checking the air quality before the temperature for anyone heading outside. Darius Johnson reports.
The Daley Plaza Farmers Market was on as usual Thursday, but some people wore masks to protect themselves from the bad air. Vendors took precautions to stay safe while selling their produce.
Chicago air quality has plummeted deep into unhealthy territory as Canadian wildfire smoke has settled in an acrid haze over the area Thursday morning. Darius Johnson reports.
An Air Quality Alert for the Chicago area is only being made worse by the arrival of drifting smoke from wildfires in Canada and Minnesota.
The combination of a heat wave and an Air Quality Alert from wildfire smoke means athletes in the Chicago area for tournaments and other summer play need to take extra precautions.
An Air Quality Alert for the Chicago area is only being made worse by the arrival of drifting smoke from wildfires in Canada.
An Air Quality Alert is in effect for nearly the entire Chicago area for high levels of ozone pollution during enduring hot and stagnant weather.
Chicago is bracing for another heat wave, less than two weeks after the last one. This time, the heat comes with air quality concerns.
While you may think of ozone as a welcome element in our Earth's atmosphere that protects us from the sun's harmful radiation, ground-level ozone that we breathe is a harmful pollutant.
Chicago has the largest air quality monitoring network in the country thanks to a partnership between the city, the University of Illinois Chicago, and local community groups.
El Paso, Texas, and Los Angeles, California, had some of the worst air pollution in the U.S. last year, according to a new report.
Wildfires are raging on the United States' West Coast. The Gifford Fire has already burned more than 4,000 acres in California.
Meteorologist Kylee Miller has more as the alert will enter its fourth day.
Chicago air quality remains in the top five worst in the world Friday with an Air Quality Alert in place from Canadian wildfire smoke.
The Original Rainbow Cone celebrated its 100th anniversary on Sunday with a special event at its Beverly location.
A person was killed when a crash hit multiple mailboxes and a tree in the west Chicago suburb of Lisle early Sunday morning.
A woman was found stabbed to death early Sunday morning in Chicago's Albany Park neighborhood.
Two Chicago men were arrested early Sunday morning following a pursuit along the Borman Expressway in Northwest Indiana.
A person was found dead inside a house in Lake Forest, Illinois, following a fire early Sunday.
In a wide-ranging interview with the CBS News partner BBC News, Hunter Biden grew emotional as he discussed his father's condition, describing it as very sad to watch.
In a narrow 50-49 vote, President Trump's former defense lawyer was confirmed as attorney general in a vote early Saturday.
The White House has informed Lisa Cook, a member of the Federal Reserve Board of Governors, that President Trump is considering firing her.
A federal appeals court said the White House lacks the authority to unilaterally construct the 90,000-square-foot ballroom. President Trump said the administration will appeal to the Supreme Court.
The Pentagon on Friday released a new batch of documents and images related to UFOs, the fifth disclosure in recent months about the strange encounters.
The Trump administration is taking aim at power grid operator PJM Interconnection over rising electricity bills that affect Illinois and Indiana residents.
Chicago remained the most bed bug-treated city in the country, according to Orkin's latest annual rankings covering a full year of residential and commercial treatment data.
Illinois Attorney General Kwame Raoul this week warned residents cleaning up from last month's storms to be on the lookout for scams.
Illinois Gov. JB Pritzker on Thursday signed several new consumer protections into law, including a ban on junk fees.
CBS News Chicago has learned that Illinois home insurance premiums are not only higher than the nation's average, but going up faster too.
In a wide-ranging interview with the CBS News partner BBC News, Hunter Biden grew emotional as he discussed his father's condition, describing it as very sad to watch.
With the cyclosporiasis linked to iceberg lettuce growing and consumers wary of the products on grocery shelves, many in Chicago are turning to local farmers market for fresh and safe greens.
East Chicago, Indiana is being placed on a precautionary boil water advisory starting Monday morning for planned installations that could affect water safety.
A new Northwestern Medicine study on long COVID shows women show more neurological symptoms than men.
A lettuce supplier to fast-food giant Taco Bell has been linked to a nationwide cyclosporiasis outbreak that has sickened thousands of people, the CDC said.
The Original Rainbow Cone celebrated its 100th anniversary on Sunday with a special event at its Beverly location.
The Shops at North Bridge on the Magnificent Mile announced plans Thursday for a multimillion-dollar renovation project.
While the building that housed the flagship Ann Sather restaurant on Belmont Avenue has been torn down, the renowned Chicago restaurant chain is now set to open a new Lakeview location.
Nationally, data centers used 17.4 billion gallons of water in 2023 — a figure projected to reach 72.6 billion gallons by 2028, raising concerns about states' water supplies.
Chicago's Wishbone Restaurant will soon be closing after 36 years in business.
Crews need about a week and a half to tear down the festival site before the city can begin its own inspection — and past cleanup costs have topped $1 million.
Vincent Pastore played Salvatore "Big Pussy" Bonpensiero on all six seasons of "The Sopranos," which aired from 1999 to 2007.
If weather forces an evacuation, shelter sites are located at Grant Park North, Grant Park South, and Millennium Lakeside Garages, accessible through the vehicle entrance on Michigan Avenue.
Grant Park was filled with tens of thousands of people Thursday for the start of Lollapalooza, as warm weather greeted festivalgoers on day one of the four-day music festival.
Academy Award-winning Irish singer-songwriter Glen Hansard has died in a motorcycle crash.
Northalsted Market Days 2026 was under way for one more day on Sunday.
Chicago police this weekend were looking for help from the public in finding a man accused of shooting a 16-year-old boy in the West Lawn neighborhood earlier this year.
While Chicago's piping plovers are gearing up for migration, Chicago Piping Plovers lead monitor John McElhattan joins Suzanne Le Mignot to talk about conservation efforts.
Suzanne Le Mignot’s nephew, Tommy Hull, and his fiancée, Madison Baird, celebrated their engagement Saturday surrounded by family and friends at the Hull family home. Meanwhile, Mary Kay Kleist shows us a photo of lightning striking the beach at Madeira Beach in Florida.
A 1-year-old boy was left in critical condition, and two adults were also injured, after a fire in Chicago’s South Shore community this weekend.
Severe weather hit the Chicago area on Sunday, in what was expected to be the first of three days of storms.
Three people were shot, and a fourth person was also injured, in a drive-by incident in Chicago's North Austin neighborhood Sunday morning.
A woman is dead after a chain of hit-and-run crashes on the northern end of Chicago's Lakeview community Saturday night.
The investigation into mishandled and decomposing bodies found at a Chicago funeral home has expanded to a second facility, sources said.
The Original Rainbow Cone celebrated its 100th anniversary on Sunday with a special event at its Beverly location.
Neighbors of a South Side animal feed plant have complained about the noxious smell and air quality for years. Now the city of Chicago and state of Illinois are suing Pullman Innovations to clean up the air, as well as for alleged illegal work and permit violations.
The owners of a Far South Side funeral home where dozens of decomposing bodies were found earlier this week have run into trouble with state regulators before over their handling of bodies at a crematory in the south suburbs.
University of Illinois researchers have found a correlation between more green spaces and less violence in neighborhoods. A group in Chicago is planting trees with the mission to bring beauty and safety to the whole city.
Security video captured the moment a utility pole fell in a parking lot behind a La Grange Park, Illinois, animal hospital, igniting a fire that destroyed multiple cars.
An Illinois Tollway glitch that left thousands of drivers with unexpected warnings about unpaid tolls stemmed from an extra digit in codes within the system's computers, according to records obtained through a Freedom of Information Act request.
Munetaka Murakami homered and Tristan Peters and Chase Meidroth each drove in a pair of runs in Chicago's five-run sixth inning as the White Sox beat the Cleveland Guardians 6-3 Saturday, snapping a season-worst four-game skid.
The Chicago White Sox retired the No. 13 of former manager and shortstop Ozzie Guillén in a ceremony before Saturday's game against Cleveland.
Jorge Messi served as his son's agent and accompanied him to Europe when he signed with Barcelona as a teenager.
Angel Martínez hit a grand slam and drove in a career-high six runs and the Cleveland Guardians beat the AL Central-leading Chicago White Sox 8-2 on Friday night to end a three-game losing streak.
Kevin Gausman provided exactly what the Cubs hoped for when they acquired him from the Blue Jays last weekend, pitching seven sharp innings in his Chicago debut in a 6-4 victory over the Kansas City Royals on Friday night.
A woman was found stabbed to death early Sunday morning in Chicago's Albany Park neighborhood.
Two Chicago men were arrested early Sunday morning following a pursuit along the Borman Expressway in Northwest Indiana.
Chicago police this weekend were looking for help from the public in finding a man accused of shooting a 16-year-old boy in the West Lawn neighborhood earlier this year.
At least four people were killed, and 12 more were wounded, in shootings in Chicago this weekend as of early Sunday afternoon. The victims ranged in age from 20 to 50.
Four people were in the hospital, three of them with gunshot wounds, after a shooting on Chicago's West Side early Sunday morning.