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

Tuesday stays warm and dry, with highs near 90 and a bit more humidity under partly cloudy skies in the Philadelphia region.

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

It’s a familiar summer sight by now, and sometimes a familiar smell. The Pennsylvania Department of Environmental Protection ...

Smoke from Canadian wildfires is causing air quality concerns for millions of Americans in the Midwest and Northeast.

An air quality alert went into effect for the metropolitan area went out Monday at midnight and continues until midnight ...

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

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

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

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

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