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
Jewish UCLA students beaten with sticks, pepper sprayed and knocked out by anti-Israel campus mob: lawsuit

Jewish UCLA Students File Lawsuit After Violent Anti-Israel Attack on Campus

The Department of Justice has initiated legal action against the University of…
Facial hair takes role in California governor's race: 'Shows strength'

California Governor’s Race Sees Facial Hair as a Symbol of Strength

The race for governor in California has taken an unexpected twist, centering…
Tourist accused of hurling rock at endangered Hawaiian monk seal was trying to protect sea turtles, lawyer says

Lawyer Claims Tourist Threw Rock to Safeguard Sea Turtles, Not Harm Hawaiian Monk Seal

A defense attorney representing a tourist from Washington state, who is accused…
Unique phenomenon causing Jersey Shore beaches to resemble tropical waters

Discover the Rare Phenomenon Transforming Jersey Shore Beaches into Tropical Paradises

If you’re dreaming of tropical waters, you might not need to venture…
Tesla road-rager sentenced to seven years in prison after attacking mom and teen in Hawaii

Tesla Driver Faces 7-Year Sentence for Hawaii Road Rage Assault on Mother and Teen

A man known as the “Tesla Road Rage Driver” has been handed…
Long Island fireworks show in honor of fallen soldiers canceled after green activists threaten protest

Long Island Fireworks Tribute to Fallen Soldiers Canceled Amid Environmental Concerns and Activist Protests

A planned fireworks tribute to honor fallen soldiers on a Long Island…
US immigration news: CPS student Ricardo Navarette released from ICE custody, expected to attend Mather High School graduation

Chicago Student Ricardo Navarette Freed from ICE Detention, Set to Celebrate Mather High School Graduation

In a heartwarming moment on Tuesday, a mother and her son were…
All 50,000 evacuees cleared to return home after chemical tank crisis at Southern California aerospace plant

Breaking News: 50,000 Evacuees Safely Return Home After Southern California Chemical Tank Crisis Resolution

In a significant development for Southern California residents, all evacuation orders related…
President Trump could attend Knicks' NBA Finals game at Madison Square Garden

Trump’s Potential Courtside Comeback: Will He Attend Knicks’ NBA Finals at MSG?

DJT at MSG: A Presidential Visit to the NBA Finals? President Donald…
NYPD cops to pull 12-hour shifts for July 4, World Cup and America 250: 'Unprecedented demands'

Unprecedented Demands: NYPD Enforces 12-Hour Shifts for July 4th, World Cup, and America 250 Celebrations

This summer, New York City is gearing up for an unprecedented influx…
EXCLUSIVE: DHS blasts sanctuary leaders after illegal immigrant accused of bat attack freed from jail

EXCLUSIVE: DHS Criticizes Sanctuary Officials Following Release of Illegal Immigrant Accused in Bat Attack

The U.S. Department of Homeland Security (DHS) has criticized Massachusetts’ sanctuary policies…
Repossession risks: Repo man reacts after job turns deadly in Jacksonville

Repossession Specialist Responds to Fatal Incident During Jacksonville Assignment

A tragic incident unfolded in Jacksonville when a tow truck driver was…