Chicago weather: Heat advisory issued for parts of Illinois and northwestern Indiana with hazardous temperatures expected, NWS says

CHICAGO (WLS) — Summer is in the air and with that comes the heat.

Chicago is expected to experience a dangerous heat wave this week as temperatures and humidity rise.

A Heat Notice was released from noon Tuesday until 8 p.m. Wednesday, according to the Office of Emergency Management and Communications. The advisory includes north-central and northeastern Illinois, as well as parts of northwestern Indiana.

The National Weather Service predicts afternoon heat index peak values ​​could reach between 105 and 109 degrees on those days.

Officials warn that hot temperatures and high humidity can cause heat-related illnesses, which could develop within 30 minutes after strenuous outdoor activity.

Residents are advised to take extra precautions, including drinking plenty of fluids, staying in air-conditioned areas and staying out of the sun. If possible, reschedule strenuous activities for early morning or evening if you are working or spending time outdoors. Also wear light, loose clothing when possible.


Know the signs and symptoms of heat exhaustion and heatstroke.


  • Confusion, altered mental state, slurred speech
  • Loss of consciousness (coma)
  • Hot, dry skin or profuse sweating
  • Seizures
  • Very high body temperature
  • Fatal if treatment is delayed
  • Heat Exhaustion:

  • Headache
  • Nausea
  • Dizziness
  • Weakness
  • Irritability
  • The thirst
  • Profuse sweating
  • High body temperature
  • Decreased urine output
  • Anyone overwhelmed by the heat should be moved to a cool or shaded area, officials said. Heatstroke is an emergency and 911 should be called.

    They also recommend checking on relatives and neighbors.

    Last month, during a spring heat wave, three women were found dead in a Rodger Park seniors’ apartment building where other residents said they had started complaining to the management of the oppressive heat conditions a few days earlier.

    RELATED: Calls for chilling order grow after 3 women found dead in Rogers Park seniors’ apartment building

    Authorities are also reminding people never to leave young children or pets unattended in vehicles under any circumstances.

    Severe storms are also possible on Monday before the heat sets in, said ABC7 meteorologist Phil Schwarz.

    The NWS indicates that the heat should break towards the end of the week.

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