Forecasters say weak winds have left Canadian wildfire smoke to linger over the U.S. Stronger winds are expected to bring relief later in the week.

The air quality index on Tuesday across the Midwest and the Northeast ranged from "moderate" to "unhealthy" for sensitive adults. Some areas in northern Wisconsin, eastern Pennsylvania, northern ...

Air quality alerts were issued in North Jersey Aug. 5 as smoke from Canadian wildfires drifts across the northern United States.

We’re still dealing with poor air quality due to lingering Canadian wildfire smoke; we’re tracking the possibility of extreme heat at the end of the week ...

Air quality alerts were issued across the Northeast and Midwest US on August 5 due to elevated PM2.5 levels from Canadian ...

Smoke from hundreds of wildfires in Canada is lingering over the northern U.S., spreading across to roughly a dozen states ...

We had another decrease in the air quality levels during the day Monday as a southerly wind pushed in another round of thicker smoke to the area.

Wisconsin's air quality Aug. 5 is improving from yesterday, but the DNR's alert is still at the Unhealthy for Sensitive ...

We had another decrease in the air quality levels during the day Monday as a southerly wind pushed in another round of ...

The Wisconsin DNR monitors air quality, which in the case of Sheboygan County is done from Plymouth – and that reading was ...

While an air quality alert continues for parts of the Midwest due to smoke from Canadian wildfires, northeastern Illinois was ...

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