POLISCOPE
Back to feed
NewsNBC Chicago – LocalJuly 16, 2026Illinois

Chicago Area Air Quality Reaches Hazardous Levels

Parts of the Chicago area experienced record-breaking hazardous air quality levels due to wildfire smoke from Canada and Minnesota. The poor air quality forced the closure of public pools and beaches and prompted officials to advise residents to move outdoor activities indoors.

air qualitypublic healthenvironmentwildfire smokeChicago
Read the full story at NBC Chicago – Local

Why It Matters

Residents face immediate health risks from fine particulate matter, leading to the cancellation of outdoor events and the closure of public facilities through at least Friday night.

Key Facts

  • Air Quality Index (AQI) levels in parts of the North Shore exceeded 770, significantly higher than the 301 threshold for 'hazardous' conditions.
  • Chicago city AQI levels were recorded at just under 600.
  • An air quality alert remains in effect for the Chicago area through at least Friday night.
  • The poor air quality is caused by a high-pressure system trapping wildfire smoke from Canada and northern Minnesota.
  • Public pools and beaches in the city and suburbs were closed due to the air quality.
  • Outdoor camps and events were shifted indoors.
  • PM2.5 particles are fine inhalable particles 2.5 micrometers or smaller, which can lodge in lungs and enter the bloodstream.
  • The EPA classifies AQI levels of 301 or higher as 'maroon' or 'hazardous,' indicating emergency conditions for everyone.
  • Long-term exposure to wildfire smoke particles is estimated to contribute to 24,100 deaths annually in the lower 48 states.
  • The National Weather Service indicates that smoky air could return periodically until the wildfires are extinguished, which may take weeks.

Who's Mentioned

personSteven Freitag“National Weather Service meteorologist in Pontiac, Michigan.”personJake Petr“National Weather Service meteorologist.”locationHighland Park“Suburban area reporting AQI levels above 600.”locationLake Forest“Suburban area reporting AQI levels above 600.”locationWaukegan“Suburban area reporting AQI levels above 600.”locationNorthbrook“Suburban area reporting AQI levels above 770.”organizationAirNow.gov“Federal website used for tracking and reporting air quality data.”personAlicia Roman“NBC 5 Storm Team Meteorologist.”organizationEnvironmental Protection Agency“Federal agency that defines and regulates air pollutants.”organizationNational Weather Service“Federal agency providing meteorological data and air quality alerts.”