Dense fog is smothering Philadelphia early Sunday, dropping visibility in spots and keeping temperatures hovering near 50°F. The low clouds and pea-soup conditions are slowing commutes and creating flight headaches at Philadelphia International Airport.
Fog And The Morning Commute
Thick fog is widespread across the city this morning, with visibility in some locations down to a quarter mile or worse. The National Weather Service has a Dense Fog Advisory in effect until 7 AM EDT Sunday, March 8, 2026, while coastal waters are under a Marine Dense Fog Advisory through 11 AM and a Small Craft Advisory remains in place for Atlantic waters until 6 PM. If you have to hit the road, ease off the gas, stick to low beams, and give yourself extra room to stop. NWS Mount Holly
Afternoon And The Week Ahead
Showers and patchy fog should wind down through mid-morning, with skies turning mostly cloudy to partly sunny and temperatures climbing to a springlike high near 70°F this afternoon, with west winds around 5 to 10 mph. A mild start to the week follows, with highs in the upper 60s to low 70s Monday and Tuesday, before a strong cold front sweeps in Wednesday night into Thursday, bringing rain, gusty winds, and a chance for a rain-and-snow mix late Thursday into Friday. Mariners and coastal residents should keep an eye on the marine forecast later this week for increasing winds and building seas. For more on how this fog tangled the early commute, see how the fog choked Philly's morning rush.
Plan Ahead
Expect visibility to improve through mid- to late-morning, but still check flight and transit status before heading out. Keep up with local alerts and the National Weather Service for any updates through the day.
