Increase in opioid drug overdose incidents during hot Chicago weather triggers city's spike alert system

CHICAGO (WLS) — Although overall opioid overdose incidents have been decreasing citywide over the last few years, a sudden increase occurred over the weekend, resulting in the year’s first red alert.

Health officials told ABC7 the hot temperatures may be to blame, at least, in part.

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

This past Saturday, as temperatures climbed, so did the emergency calls for opioid overdoses, surpassing 37 cases — a threshold set by the Chicago Department of Public Health to issue a red alert.

“We often observe that as the weather gets warmer, the average number of overdoses tends to rise,” explained Miao Jenny Hua, Deputy Commissioner of the Chicago Department of Public Health.

Health officials say the spike is similar to the one that also occurs in gun violence and domestic violence incidents during the summer months and can be partly attributed to the specific nature of where these overdoses occur.

“Five neighborhoods on the West Side of Chicago account for something like a third of all overdoses that happen citywide. Over half of those overdoses do occur outside,” Hua said.

A former heroin addict himself, Marnell Brown runs an organization called To Walk in My Shoes. He and his team drive around those five neighborhoods, East Garfield Park, West Garfield Park, North Lawndale, Austin and Humboldt Park, administering Narcan to those in distress.

“Once they get their drug, they don’t go on the inside and do their drugs. They do their drugs right there on the spot or leaving the spot,” Brown said.

This weekend, he says, was busy.

“We seen more activity Saturday than we’ve seen in the past Saturdays,” Brown said. “People just have a different reaction to fentanyl when they’re in the heat.”

But while Chicago EMS dispatch records do show a definite increase in the number of overdose calls during the summer months, health officials say not all red alert spikes are triggered by heat. The introduction of new substances into the drug supply can also lead to a spike and so can holidays. Last year’s only red alert came on Mother’s Day when the high was only 66 degrees.

Ultimately, beating addition is the only way to continue to bring those numbers down. Free and immediate medication assisted treatments are available to all Illinois residents at 833-234-6343, or text “HELP” to 833234.

Click here for more information about the hotline.

Copyright © 2025 WLS-TV. All Rights Reserved.

You May Also Like

Nolan Wells Drank Heavily, Stayed on Horn Island Before Vanishing - Internewscast Journal

Nolan Wells Drank Heavily, Stayed on Horn Island Before Vanishing

Mississippi teenager Nolan Wells had been drinking heavily before he disappeared during…
Freed American Details Brutal Iran Prison Ordeal, Warns Hostages Face Rising Danger - Internewscast Journal

Freed American Details Brutal Iran Prison Ordeal, Warns Hostages Face Rising Danger

For almost six years, American conservationist Morad Tahbaz says he endured conditions…
Comey Seeks to Drop Seashell Instagram Case on First Amendment Grounds - Internewscast Journal

Comey Seeks to Drop Seashell Instagram Case on First Amendment Grounds

Washington — Former FBI Director James Comey asked a federal judge Monday…
Christian persecution concerns rise in Egypt as State Department presses religious freedom

U.S. Presses Egypt as Christian Persecution Fears Grow

Christianity’s surge in Middle East sees millions of Muslim converts amid conflict…
Bryan Kohberger Eyes Post-Conviction Relief After Appeal Waiver - Internewscast Journal

Bryan Kohberger Eyes Post-Conviction Relief After Appeal Waiver

Bryan Kohberger, who admitted to murdering four University of Idaho students during…
Berlin Pride attack believed to be an act of Islamic terror, suspect on the run: German minister

Why Was Berlin Attack Suspect Free Despite Alleged ISIS Ties?

German officials are facing urgent questions after a deadly attack near a…
Oil Prices Tumble as U.S.-Iran Pause Eases Market Fears - Internewscast Journal

Oil Prices Tumble as U.S.-Iran Pause Eases Market Fears

Oil prices fell sharply Monday as a pause in fighting between the…
Mitch McConnell Remains in Rehabilitation Facility, Will Skip Kentucky Political Event, Office Says - Internewscast Journal

Mitch McConnell Remains in Rehabilitation Facility, Will Skip Kentucky Political Event, Office Says

Sen. Mitch McConnell will skip a high-profile Kentucky political gathering this weekend…
Chicago CTA Crime Crackdown Warns Violent Offenders of Jail - Internewscast Journal

Chicago CTA Crime Crackdown Warns Violent Offenders of Jail

CHICAGO — Cook County State’s Attorney Eileen O’Neill Burke is rolling out…
Chicago Cleans Up as NWS Surveys Tornado-Warned Storm Damage - Internewscast Journal

Chicago Cleans Up as NWS Surveys Tornado-Warned Storm Damage

HAZEL CREST, Ill. () — Two National Weather Service survey teams are…
Chilling 911 Audio Released in Sara Gilson Murder-Suicide - Internewscast Journal

Chilling 911 Audio Released in Sara Gilson Murder-Suicide

Disturbing 911 audio reveals a dispatcher reporting a “woman screaming and crying”…
Celeste Rivas Allegedly Threatened D4vd’s Career Before Murder - Internewscast Journal

Celeste Rivas Allegedly Threatened D4vd’s Career Before Murder

Newly revealed text messages allegedly exchanged between Celeste Rivas and D4vd show…