Chicago Air Quality Plunges Amid Canadian Wildfire Smoke: City Among Worst In The World

Marisol Vega
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Chicago Air Quality Plunges Amid Canadian Wildfire Smoke: City Among Worst In The World

CHICAGO — Smoke drifting from massive Canadian wildfires has pushed Chicago’s air quality to one of the worst levels globally, prompting emergency alerts and renewed health guidance from local and national agencies.

Air Quality Alert Issued For Northeast Illinois

On Thursday, the National Weather Service issued an Air Quality Alert for all of northeast Illinois, including Chicago, warning that the AQI had entered the “red” zone, indicating unhealthy air conditions for the general population — not just those with pre-existing sensitivities.

Chicago Air Quality Plunges Amid Canadian Wildfire Smoke: City Among Worst In The World

The AirNow.gov index, a national air quality monitoring system, confirmed the city had reached hazardous thresholds. As a result, the alert was extended through Friday, marking the first Air Quality Action Day of 2025, as declared by the Illinois Environmental Protection Agency.

This is not just about vulnerable populations anymore. These levels impact everyone, especially with prolonged outdoor exposure,” noted AirNow officials.

Health Precautions Urged For All Residents

Health experts recommend avoiding strenuous outdoor activities, particularly for:

  • People with heart or lung conditions

  • Children and teens

  • Older adults

Residents are urged to limit time outside, move activities indoors, and reschedule exercise to times when air quality improves.

The Illinois EPA also encouraged residents to minimize energy usage and vehicle emissions, hoping to reduce compounding pollutants during this hazardous period.

Be proactive. Don’t wait for symptoms. If you can smell the smoke or see the haze, it’s affecting your lungs,” said one public health official.

Canadian Wildfires To Blame

The smoke stems from active wildfires in central Canadian provinces, which have sent thick plumes of particulate matter drifting southward over the Great Lakes region and into Illinois.

Visuals from Thursday showed a dense haze cloaking the Chicago skyline, including North DuSable Lake Shore Drive — a stark reminder of how far-reaching the impacts of climate-driven wildfires have become.

When Will Conditions Improve?

The Illinois EPA forecasts gradual improvement starting Saturday, with air quality expected to return to moderate levels over the weekend.

Still, the event underscores the growing environmental and public health risks tied to global wildfires, and Chicago’s increasing vulnerability to climate-linked disasters.

Have you changed your outdoor plans due to this smoke? Have you experienced breathing problems or taken new precautions this summer?

Comment below on ChicagoSuburbanFamily.com and tell us how this air crisis is affecting your daily life.

Marisol Vega

Marisol Vega

Marisol writes about how city decisions affect everyday people. From housing and schools to city programs, she breaks down the news so it’s easy to understand. Her focus is helping readers know what’s changing and how it matters to them.

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