A Code Orange alert is in effect in the Philadelphia area, meaning the air is potentially unhealthy for sensitive groups.

There is an air quality alert for sensitive groups in our area, due to the ozone level, rather than the Canadian wildfire ...

With temperatures creeping toward 90 degrees Wednesday and the milky veil of smoke persisting over the region, the Delaware ...

Both Wednesday and Thursday in the Philadelphia region will be very warm and humid, with highs in the upper 80s and low 90s.

Smoke from the Canadian wildfires​ will be visible in the Philadelphia area, but no major impacts on air quality are expected ...

There is an air quality alert for sensitive groups in our area, due to the ozone level, rather than the Canadian wildfire smoke.

At 3:45 p.m. on Tuesday, the National Weather Service reported an air quality alert in effect until Thursday at midnight for ...

On Thursday, the region is expected to be at Code Orange levels, when it can be unhealthy for people with respiratory ...

Wildfire smoke was helping raise ozone to hazardous levels. No alerts have been issued, but the air quality may approach ...

The Philadelphia area, parts of South Jersey and the Lehigh Valley will experience unhealthy air quality for sensitive groups on Wednesday, according to officials.

The Lehigh Valley will be under a Code Orange air quality alert Wednesday. Young children, the elderly, and those with ...