Thursday is forecast to be Philly’s first day of the season that tops 90 degrees. It comes with a Code Orange air quality alert.

Sussex County Council denied a permit for a substation to US Wind for a renewable energy project last year.

Councilmember Nina Ahmad said Parks and Recreation officials are ignoring the 2020 law. The city department says the natural herbicides don’t work.

Philadelphia Gas Works says it is seeking facts in the rate hike case. Climate advocates say the utility is trampling on First Amendment rights.

Delaware’s top environmental regulator apologized Thursday for what he called poor public messaging about emissions from the Delaware City Refinery.

The EPA last month proposed to give water providers more time to remove toxic PFAS chemicals from drinking water.

The planned solar farm could be finished in 2026, officials say. But it comes as Congressional Republicans seek to slash tax credits for solar.

Upper Darby School District is planning six Solar for Schools projects. Without federal tax credits, the district says they wouldn’t happen.

Young children, older adults and people with lung conditions such as asthma should limit their activity outside, state officials said.

The National Weather Service says that while skies may be hazy, wildfire smoke should remain aloft. Air quality at ground level remains good.

Sussex County council members voted to deny a permit for offshore wind substation. But state lawmakers could reverse that decision.

The House budget bill Rep. Brian Fitzpatrick voted for would be a “disaster” for business, solar installers say.

Repairs to a broken air pollution control device could take two more weeks, a refinery official said.

The EPA regulated "forever chemicals" last year, but recently proposed to rescind certain restrictions.

NOAA said a warmer ocean is partly to blame for the above average predictions. New Jersey officials said beach preparation is key.