PM2.5 — is expected to push the Air Quality Index over 100, reaching levels unhealthy for sensitive groups, including ...

Tuesday night is when the high pressure system shifts to the east, the NWS says. This should allow south winds to return, ...

Canadian wildfire smoke brought numerous air quality alerts to the Northeast on Aug. 4, including in multiple North Jersey ...

An air quality alert is in effect for all of Massachusetts as smoke from Canadian wildfires descends into the Boston area.

Smoke from Canadian wildfires will persist across most of central and eastern Pennsylvania throughout Tuesday.

When combined with the Philly area’s warm, sunny weather, the incoming smoke stands to increase levels of ozone, the ...

Smoke from Canadian wildfires continues to affect air quality across the Midwest, though Monday’s conditions were an ...

Canadian wildfire smoke has affected Wisconsin all week, prompting multiple air quality alert extensions from the DNR.

The Wisconsin Department of Natural Resources re-extended its air quality alert statewide as wildfire smoke lingers.

Massachusetts could see hazy skies throughout the day Monday as wildfire smoke from Canada drifts into the Bay State. The ...

The smoke is expected to remain over the northern and central Plains of the United States for the next couple of days, ...