Wildfire smoke live updates: Detroit, Chicago and the Midwest blanketed by haze Smoke from Canadian wildfires is smothering U.S. cities like Detroit, Chicago and Pittsburgh. Air quality warnings are in effect across the Midwest as officials warn of hazardous conditions.

Detroit, Chicago and the Midwest blanketed by wildfire haze from Canada

A screenshot of the AirNow database shows the impact of smoke from Canadian wildfires on Wednesday. Screenshot / NPR hide caption

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Screenshot / NPR

A screenshot of the AirNow database shows the impact of smoke from Canadian wildfires on Wednesday.

Screenshot / NPR

Smoke from Canadian wildfires is smothering U.S. cities like Detroit, Chicago and Pittsburgh. Air quality warnings are in effect across the Midwest as officials warn of hazardous conditions.

Here's what we're following:

Smoke and haze from the Canadian wildfires hang over Pittsburgh on June 28. Oliver Morrison/90.5 WESA hide caption

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Oliver Morrison/90.5 WESA

Smoke and haze from the Canadian wildfires hang over Pittsburgh on June 28.

Oliver Morrison/90.5 WESA

Chicago's air quality was the worst of anywhere in the world at one point yesterday, according to WBEZ. The Illinois city had an air quality rating of "unhealthy" as of 9 a.m. local time.

Meteorologists expect Michigan's air quality to fluctuate this week between unhealthy for sensitive groups and unhealthy for everyone, Michigan Radio reported. An official with the American Lung Association warned all residents to take precautions.

A thick haze is moving from Erie and the Great Lakes region across Pittsburgh, WESA said. A code red air quality alert issued by the Pennsylvania Department of Environmental Protection is in effect for several counties all day Wednesday.

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For more on the impact of the Canadian wildfires on air quality across the US, head over to NPR's live updates for the latest.


Newsrooms from across the NPR Network contributed to this coverage.